First report of a hymenopteran parasitoid complex on jackfruit shoot and fruit borer Diaphania caesalis (Lepidoptera: Crambidae) from India

ABSTRACT

A survey of the species composition and relative abundance of Diaphania caesalis Walker (Lepidoptera: Crambidae) in plantations of jackfruit (Artocarpus heterophyllus Lam.) in three southern states along India’s western coast recorded thirteen species of primary parasitoids and one species of a hyperparasitoid, namely Tetrastichus pantnagerensis Khan (Hymenoptera: Eulophidae). Apanteles stantoni Ashmead (Hymenoptera: Braconidae) was the most dominant parasitoid and found in 35% of the parasitised host larvae in Karnataka, 38.5% in Kerala, and 33.1% in Tamil Nadu whereas the overall level of parasitisation, involving all the different parasitoids recorded, was approximately 41%–45% and did not vary significantly with location.     

菠萝蜜果肉的发育解剖学研究

为了解菠萝蜜(Artocarpus heterophyllus Lam.)果肉的发育过程,运用石蜡切片和水装片的方法对其进行解剖学观察。结果表明,菠萝蜜果肉由表皮、基本组织和维管束组成,花后8周表皮和基本组织细胞中出现淀粉粒,成熟时完全消失,贮藏作用明显;外表皮细胞形态较规则,而内表皮细胞壁的初生纹孔场相对较多;维管束不发达,发育过程中没有明显变化。菠萝蜜果实发育成熟在花后18~19周。这为菠萝蜜的解剖学基础研究积累了资料。     

Evaluation of genetic diversity in jackfruit (Artocarpus heterophyllus Lam.) based on amplified fragment length polymorphism markers

Artocarpus heterophyllus Lam., commonly called jackfruit, is a medium-sized evergreen tree that bears high yields of the largest known edible fruit. Yet, it has been little explored commercially due to wide variation in fruit quality. The genetic diversity and genetic relatedness of 50 jackfruit accessions were studied using amplified fragment length polymorphism markers. Of 16 primer pairs evaluated, eight were selected for screening of genotypes based on the number and quality of polymorphic fragments produced. These primer combinations produced 5976 bands, 1267 (22%) of which were polymorphic. Among the jackfruit accessions, the similarity coefficient ranged from 0.137 to 0.978; the accessions also shared a large number of monomorphic fragments (78%). Cluster analysis and principal component analysis grouped all jackfruit genotypes into three major clusters. Cluster I included the genotypes grown in a jackfruit region of Karnataka, called Tamaka, with very dry conditions; cluster II contained the genotypes collected from locations having medium to heavy rainfall in Karnataka; cluster III grouped the genotypes in distant locations with different environmental conditions. Strong coincidence of these amplified fragment length polymorphism-based groupings with geographical localities as well as morphological characters was observed. We found moderate genetic diversity in these jackfruit accessions. This information should be useful for tree breeding programs, as part of our effort to popularize jackfruit as a commercial crop.     

Diversity of Breadfruit (<Emphasis Type="Italic">Artocarpus altilis</Emphasis>, Moraceae) Seasonality: A Resource for Year-Round Nutrition<Superscript>1</Superscript>

Diversity of Breadfruit ( Artocarpus altilis , Moraceae) Seasonality: A Resource for Year-Round Nutrition. Breadfruit, Artocarpus altilis (Parkinson) Fosberg, is an important but underutilized staple crop cultivated throughout Oceania and much of the wet tropics. Indigenous peoples have selected and cultivated cultivars with different fruiting seasons to effectively extend fruit production for most of the year. In the present study, the seasonality of 219 breadfruit accessions originating from 17 Pacific island groups, the Seychelles, the Philippines, and Indonesia, and now growing in the National Tropical Botanical Garden’s (NTBG) Kahanu Garden, Hana, Hawaii, were evaluated. The predominant season of male flower production for most cultivars was from May to September, and fruit was produced most frequently between August and January. However, there were differences in the duration of the fruiting season from year to year and among cultivars. Over the 10-year period, 14 cultivars did not reliably produce fruit; most of this group were ‘ulu afa’ trees collected from Tokelau. About 24 cultivars exhibited very little seasonality and produced fruit throughout the year. The rest of the cultivars could be clustered into seasonality groups with characteristic fruiting patterns. Comparison of literature values indicates that unlike Hawaii, the breadfruit season in most locations begins around the date the sun reaches zenith prior to the summer months and extends throughout the summer months. Five cultivars asexually propagated from the NTBG collection growing in Kiribati (1°28′ N) exhibit similar fruiting patterns as in Hawaii, except that they begin 2–3 months earlier. These data predict that cultivars with complementary fruiting seasons in Hawaii may experience a temporal shift in their seasonality but will maintain their compatibility when cultivated in different locations and could enable year-round fruit production in many regions.     

Factors affecting in vitro proliferation and rooting of shoots of jackfruit (Artocarpus heterophyllus Lam.)

Successful vegetative propagation of seedling jackfruit (Artocarpus heterophyllus Lam.) has been achieved by in vitro methods. Proliferation from nodal explants was greater than from shoot tips. Of the cytokinins tested, benzylaminopurine (BAP) was more effective than either 2-isopentenyladenine (2iP) or kinetin (Kin) and produced maximum proliferation when used at 5×10^-6M. Shoot proliferation was optimal at 30°C with a 12 h photoperiod. Optimal rooting of shoots in vitro was obtained with indolebutyric acid (IBA) at 10^-6M. The number and length of roots was significantly increased in 12 h light as compared with the dark.     

Inhibition of midgut protease of yellow stem borer (<Emphasis Type="Italic">Scirpophaga incertulas</Emphasis>) by cysteine protease-like inhibitor from mature jackfruit (<Emphasis Type="Italic">Artocarpus heterophyllus</Emphasis>) seed

A novel protease inhibitor was isolated and purified from the mature seeds of jackfruit (Artocarpus heterophyllus) by precipitation with ammonium sulphate, followed by DEAE-cellulose and gel filtration (Sephadex G-100) chromatography. The isolated protease inhibitor strongly inhibited papain and midgut proteases of yellow stem borer (Scipophaga incertulas) larvae, as seen by in vitro assay. The purified protease inhibitor was active over a wide range of pH with the maximum activity between pH 4 and 10. This protein was also stable up to 80°C, but the retained activity was lost at 100°C, when heated for 30 min. The molecular mass of the purified cysteine-like protease inhibitor is to be 14.50 kDa as determined by SDS-PAGE. Significant reduction in larval weight and mortality was observed, when fresh rice culms with protease inhibitor was feeded to the yellow stem borer larvae. These results may provide important information to control the yellow stem borer in rice with respect to naturally occurring insecticidal proteins. The observed differences would potentially translate into reductions in population growth of yellow stem borer, indicating a potential value of using jackfruit protease inhibitor for protecting rice plants against damage by the yellow stem borer.     

Non‐native fruit trees facilitate colonization of native forest on abandoned farmland

Ecological restoration of abandoned, formerly forested farmland can improve the delivery of ecosystem services and benefit biodiversity conservation. Restoration programs can involve removing isolated, non‐native trees planted by farmers for fruit or wood. As such “legacy” trees can attract seed dispersers and create microclimates that help native seedlings to establish, removing them may actually slow forest recovery. Working on abandoned farmland in Kibale National Park, Uganda, we evaluated the effect of legacy trees on forest recovery by measuring the number, diversity, and biomass of native seedlings and saplings regenerating in plots centered on avocado (Persea americana), mango (Mangifera indica), and Eucalyptus legacy trees compared with adjacent plots without legacy trees. The assemblages of native, forest‐dependent tree species in plots around avocado and mango trees were distinct from each other and from those around eucalyptus and all the near‐legacy plots. In particular, avocado plots had higher stem density and species richness of forest‐dependent species than near‐avocado plots, particularly large‐seeded, shade‐tolerant, and animal‐dispersed species—key targets of many restoration plans. Furthermore, many of the species found in high numbers were among those failing to establish in ongoing large‐scale forest restoration in Kibale. Taken together, our results demonstrate that the legacy trees facilitate the dispersal and establishment of native tree species. Retaining the existing legacy trees for a number of years could usefully complement existing management strategies to restore more biodiverse native forest in degraded lands. However, careful monitoring is needed to ensure that the legacy trees do not themselves establish.     

Desiccation and Freezing Sensitivity in Recalcitrant Seeds of Tea, Cocoa and Jackfruit

Investigations were undertaken on the desiccation and freezingsensitivity of recalcitrant seeds of three species: tea [Camelliasinensis (L.) O. Kuntze], cocoa (Theobroma cacao L.) and jackfruit(Artocarpus heterophyllus Lamk.). All species showed changesin the physiological characteristics, desiccation and freezingsensitivity of both the seed and the embryonic axes with increasingseed maturity. Fully mature seeds of tea, cocoa and jackfruitsurvived desiccation to 24, 35 and 31% moisture content, respectively,but at these moisture levels seeds were not able to toleratefreezing in liquid nitrogen (-196 °C). Some survival ofcryopreservation was, however, achieved for excised embryonicaxes of partially and fully-mature tea and jackfruit seeds afterdrying to 14% moisture content; cocoa axes were totally freezingsensitive at all three stages of physiological maturity studied.Biochemical investigations on fully mature axes after desiccationand freezing showed that the decline in viability with moisturelevel was associated with increased leachate conductivity, lipidperoxidation products and/or soluble carbohydrates. Evidencefor disruption of cell membranes during desiccation and freezingwas supported by ultrastructural studies.Copyright 1995, 1999Academic Press Camellia sinensis (L.) O. Kuntze, Theobroma cacao L., Artocarpus heterophyllus Lamk., Phaseolus vulgaris L., tea, cocoa, jackfruit, french bean, seeds, embryonic axes, desiccation, freezing, cryopreservation     

Land use types influenced avian assemblage structure in a forest–agriculture landscape in Ghana

The conservation of biodiversity within tropical forest regions does not lie only in the maintenance of natural forest areas, but on conservation strategies directed toward agricultural land types within which they are embedded. This study investigated variations in bird assemblages of different functional groups of forest‐dependent birds in three agricultural land types, relative to distance from the interior of 34 tropical forest patches of varying sizes. Point counts were used to sample birds at each study site visited. Data from counts were used to estimate species richness, species evenness, and Simpson's diversity of birds. Mean species richness, evenness, and diversity were modeled as responses and as a function of agricultural land type, distance from the forest interior and three site‐scale vegetation covariates (density of large trees, fruiting trees, and patch size) using generalized linear mixed‐effect models. Mean observed species richness of birds varied significantly within habitat types. Mean observed species richness was highest in forest interior sites while sites located in farm centers recorded the lowest mean species richness. Species richness of forest specialists was strongly influenced by the type of agricultural land use. Fallow lands, density of large trees, and patch size strongly positively influenced forest specialists. Insectivorous and frugivorous birds were more species‐rich in fallow lands while monoculture plantations favored nectarivorous birds. Our results suggest that poor agricultural practices can lead to population declines of forest‐dependent birds particularly specialist species. Conservation actions should include proper land use management that ensures heterogeneity through retention of native tree species on farms in tropical forest‐agriculture landscapes.     

Epiphytes of Sitka spruce (<Emphasis Type="Italic">Picea sitchensis</Emphasis>) plantations in Ireland and the effects of open spaces

The epiphytes of the trunks and branches of mature Sitka spruce (Picea sitchensis) trees were studied in twelve plantations containing open spaces (glades, rides and roads) in the east and southwest of Ireland. A pair of trees was studied at each site: one tree at the south-facing edge of an open space and one in the forest interior. Spruce trees were found to support a moderately diverse range of bryophytes and lichens, including two relatively rare bryophyte species. Clear patterns in vertical distribution were identified, with bryophyte richness and cover decreasing and lichen richness and cover increasing from the tree base to the upper trunk. The open spaces themselves did not appear to affect overall epiphyte diversity, with no significant differences in any of the diversity measures between edge and interior trees. The main effect of open spaces was on the epiphyte cover of the edge trees. This was related to increased light levels combined with the presence of live branches from close to ground level on the south sides of the edge trees, which produced optimum conditions for bryophytes at the tree base and lichens in the upper plots. However, this dense side-canopy negatively affected epiphyte diversity on the north sides of the edge trees. Further research is required to assess the effects of open spaces within forestry plantations on epiphyte diversity.     

Epiphytes of Sitka spruce (<Emphasis Type="Italic">Picea sitchensis</Emphasis>) plantations in Ireland and the effects of open spaces

The epiphytes of the trunks and branches of mature Sitka spruce (Picea sitchensis) trees were studied in twelve plantations containing open spaces (glades, rides and roads) in the east and southwest of Ireland. A pair of trees was studied at each site: one tree at the south-facing edge of an open space and one in the forest interior. Spruce trees were found to support a moderately diverse range of bryophytes and lichens, including two relatively rare bryophyte species. Clear patterns in vertical distribution were identified, with bryophyte richness and cover decreasing and lichen richness and cover increasing from the tree base to the upper trunk. The open spaces themselves did not appear to affect overall epiphyte diversity, with no significant differences in any of the diversity measures between edge and interior trees. The main effect of open spaces was on the epiphyte cover of the edge trees. This was related to increased light levels combined with the presence of live branches from close to ground level on the south sides of the edge trees, which produced optimum conditions for bryophytes at the tree base and lichens in the upper plots. However, this dense side-canopy negatively affected epiphyte diversity on the north sides of the edge trees. Further research is required to assess the effects of open spaces within forestry plantations on epiphyte diversity.     

Host physiological condition regulates parasitic plant performance: <Emphasis Type="Italic">Arceuthobium vaginatum</Emphasis> subsp. <Emphasis Type="Italic">cryptopodum</Emphasis> on <Emphasis Type="Italic">Pinus ponderosa</Emphasis>

Much research has focused on effects of plant parasites on host-plant physiology and growth, but little is known about effects of host physiological condition on parasite growth. Using the parasitic dwarf mistletoe Arceuthobium vaginatum subsp. cryptopodum (Viscaceae) and its host Pinus ponderosa, we investigated whether changes in host physiological condition influenced mistletoe shoot development in northern Arizona forests. We conducted two studies in two consecutive years and used forest thinning (i.e., competitive release) to manipulate host physiological condition. We removed dwarf mistletoe shoots in April, before the onset of the growing season, and measured the amount of regrowth in the first season after forest thinning (Study I: n=38 trees; Study II: n=35 trees). Thinning increased tree uptake of water and carbon in both studies, but had no effect on leaf N concentration or δ¹³C. Mistletoe shoot growth was greater on trees with high uptake of water and carbon in thinned stands than trees with low uptake in unthinned stands. These findings show that increased resource uptake by host trees increases resources to these heterotrophic dwarf mistletoes, and links mistletoe performance to changes in host physiological condition.     

Contemporary pollen flow,mating patterns and effective population size inferred from paternity analysis in a small fragmented population of the Neotropical tree <Emphasis Type="Italic">Copaifera langsdorffii</Emphasis> Desf. (Leguminosae-Caesalpinioideae)

Pollen flow and dispersal patterns were investigated in a small, isolated forest fragment of the Neotropical insect pollinated tree Copaifera langsdorffii, using paternity analysis and eight microsatellite loci. We also investigated the coancestry and effective population size of progeny arrays for conservation and environmental restoration purposes. Open-pollinated seeds were collected from 15 seed trees within the forest fragment, in which all adult trees were mapped, measured and genotyped. Twenty seeds were also collected from the nearest neighbor tree located 1.2 km from the forest fragment. Our results show that levels of genetic diversity were significantly higher in adults than offspring and significant levels of inbreeding were detected in offspring (F = 0.226). From paternity analysis, we observed low levels of selfing (s = 8%) and pollen immigration (m = 8%) in the fragment, but very high levels were detected for the isolated tree (s = 20%; m = 75%), indicating that the population and the tree are not reproductively isolated and are connected by patterns of long distance pollen dispersal (maximum detected 1,420 m). Within the forest fragment, the pattern of pollen dispersal was a near neighbor pattern with 49% of the pollen being dispersed within 50 m. The effective population size of the progeny array was low, indicating the need to collect seeds from a large number of seed trees (at least 76) for conservation purposes. The results show that the spatial isolation of the population and isolated tree due to forest fragmentation has not disrupted genetic connectivity; however, spatial isolation does seem to increase selfing and correlated mating.     

Domestication Syndrome in Caimito (<Emphasis Type="Italic">Chrysophyllum cainito</Emphasis> L.): Fruit and Seed Characteristics

Domestication Syndrome in Caimito ( Chrysophyllum cainito L.): Fruit and Seed Characteristics: The process of domestication is understudied and poorly known for many tropical fruit tree crops. The star apple or caimito tree (Chrysophyllum cainito L., Sapotaceae) is cultivated throughout the New World tropics for its edible fruits. We studied this species in central Panama, where it grows wild in tropical moist forests and is also commonly cultivated in backyard gardens. Using fruits collected over two harvest seasons, we tested the hypothesis that cultivated individuals of C. cainito show distinctive fruit and seed characteristics associated with domestication relative to wild types. We found that cultivated fruits were significantly and substantially larger and allocated more to pulp and less to exocarp than wild fruits. The pulp of cultivated fruits was less acidic; also, the pulp had lower concentrations of phenolics and higher concentrations of sugar. The seeds were larger and more numerous and were less defended with phenolics in cultivated than in wild fruits. Discriminant Analysis showed that, among the many significant differences, fruit size and sugar concentration drove the great majority of the variance distinguishing wild from cultivated classes. Variance of pulp phenolics among individuals was significantly higher among wild trees than among cultivated trees, while variance of fruit mass and seed number was significantly higher among cultivated trees. Most traits showed strong correlations between years. Overall, we found a clear signature of a domestication syndrome in the fruits of cultivated caimito in Panama.     

Carbon fluxes to the soil in a mature temperate forest assessed by <Superscript>13</Superscript>C isotope tracing

Photosynthetic carbon uptake and respiratory C release from soil are major components of the global carbon balance. The use of ¹³C depleted CO₂ (¹³C = –30) in a free air CO₂ enrichment experiment in a mature deciduous forest permitted us to trace the carbon transfer from tree crowns to the rhizosphere of 100–120 years old trees. During the first season of CO₂ enrichment the CO₂ released from soil originated substantially from concurrent assimilation. The small contribution of recent carbon in fine roots suggests a much slower fine root turnover than is often assumed.¹³C abundance in soil air correlated best with temperature data taken from 4 to 10 days before air sampling time and is thus rapidly available for root and rhizosphere respiration. The spatial variability of ¹³C in soil air showed relationships to above ground tree types such as conifers versus broad-leaved trees. Considering the complexity and strong overlap of roots from different individuals in a forest, this finding opens an exciting new possibility of associating respiration with different species. What might be seen as signal noise does in fact contain valuable information on the spatial heterogeneity of tree-soil interaction.     

Decomposition of <Superscript>15</Superscript>N-labelled beech litter and fate of nitrogen derived from litter in a beech forest

The decomposition and the fate of ¹⁵N- labelled beech litter was monitored in a beech forest (Vosges mountains, France) over 3 years. Circular plots around beech trees were isolated from neighbouring tree roots by soil trenching. After removal of the litter layer, ¹⁵N-labelled litter was distributed on the soil. Samples [labelled litter, soil (0–15 cm depths], fine roots, mycorrhizal root tips, leaves) were collected during the subsequent vegetation periods and analysed for total N and ¹⁵N concentration. Mass loss of the ¹⁵N-labelled litter was estimated using mass loss data from a litterbag experiment set up at the field site. An initial and rapid release of soluble N from the decomposing litter was balanced by the incorporation of exogenous N into the litter. Fungal N accounted for approximately 35% of the N incorporation. Over 2 years, litter N was continuously released and rates of N and mass loss were equivalent, while litter N was preferentially lost during the 3rd year. Released ¹⁵N accumulated essentially at the soil surface. ¹⁵N from the decomposing litter was rapidly (i.e. in 6 months) detected in roots and beech leaves and its level increased regularly and linearly over the course of the labelling experiment. After 3 years, about 2% of the original litter N had accumulated in the trees. ¹⁵N budgets indicated that soluble N was the main source for soil microbial biomass. Nitrogen accumulated in storage compounds was the main source of leaf N, while soil organic N was the main source of mycorrhizal N. Use of ¹⁵N-labelled beech litter as decomposing substrate allowed assessment of the fate of litter N in the soil and tree N pools in a beech forest on different time scales. Received: 3 May 1999 / Accepted: 3 January 2000     

Genetic relationships of <Emphasis Type="Italic">Osmanthus</Emphasis> based on ISSR-PCR

Osmanthus is an important gardening plant, but determination of germplasm resources, number of species and bipship among species of Osmanthus are still not clear. In this article, genetic diversity of Osmanthus was first studied by ISSR molecular marker. Based on 20 primers screened from 74 primers, 361 bands were obtained from 17 species, and 95.29 % bands were polymorphic. Furthermore, it was found that the genetic distance between O. attenuatus and O. heterophyllus was the highest (0.5559), and was the lowest (0.2351) between O. ×fortunei and O. heterophyllus. As shown in the dendrogram obtained by UPGMA method, 17 species of Osmanthus could be divided into group I and group II, the group I was composed of O. matsumuraanus, O. americanus, O. yunnanensis and O. attenuatus, and the other species belonged to the group II that was further divided into two subgroups apparently, which were not consistent with the classic classification system, but mostly similar with traditional viewpoint about bipship among species. Therefore, it was feasible and effective to study genetic diversity among species of Osmanthus by ISSR molecular marker.     

Potential Management of <Emphasis Type="Italic">Chamaedorea seifrizii</Emphasis> (Palmae), a Non-timber Forest Product from the Tropical Forest of Calakmul,Southeast Mexico<Superscript>1</Superscript>

Potential Management of Chamaedorea seifrizii (Palmae), a Non-timber Forest Product from the Tropical Forest of Calakmul, Southeast Mexico. Leaves and seeds of Chamaedorea (xate) palms are important non-timber forest products (NTFPs). In the Calakmul region (Yucatan Peninsula) of Mexico, several communities have sporadically collected and sold seeds of C. seifrizii since 1980. However, harvesting has intensified recently, raising concerns about overexploitation. To evaluate the economic potential of leaf and seed exploitation in the area, we collected information on abundance, population patterns, and leaf and seed stocks in Ejido Conhuas, a community within the Calakmul Biosphere Reserve (CBR). Then we combined these data with current market values and hypothetical management regimes obtained from the literature for leaves and seeds. Conducting a quantitative analysis of 43 0.1^ha plots with differences in forest and soil type, we assessed the abundance of C. seifrizzi in the area. We also conducted interviews to estimate the importance of xate in the local economy. We found C. seifrizii density to be highly variable, with a mean (±SE) of 295 (±35), with forest type being the most influential factor. Population structures differ between forest types, with healthy populations in medium and lower forest. We found a mean density of leaves of harvestable size of 3,750 (±380) leaves ha^-1, while seed production was 1.5 (±0.3) kg/ha^-1 of fresh seeds. Assuming sustainable harvest rates of 30–50% for leaves and 80% for seeds, one hectare of forest could generate USD 7.0–15.9/ha^-1. Considering the number of households (102) and 10% of the total area managed each year (5,700 ha), this harvest could generate a household income of USD 391–838 annually. At the moment, xate trade represents a minor component in the economy of the community, but given the area’s extensive forest (>57,000 ha), the resource abundance, and the low human population, we believe the NTFPs derived from C. seifrizii have a potentially great economic impact in the area.     

Karen Homegardens: Characteristics,Functions, and Species Diversity

Diversity is one of the most important traits of homegardens and contributes to maintaining their functions. Here, we investigated the diversity, characteristics, and functions of 75 Karen homegardens from four villages in Chiang Mai and Tak provinces in northern Thailand. In each homegarden, all used plant species were registered and classified according to their main use. The diversity and richness in each homegarden was estimated and the stratification of plants in horizontal zones was investigated. A total 268 plant species were recorded, ranging from 100 to 146 species in each of the four villages. These plants were mostly kept in the homegarden yard or along their boundaries. The most common species were mango (Mangifera indica L.), jackfruit (Artocarpus heterophyllus Lam.), guava (Psidium guajava L.), and taro Colocasia esculenta (L.) Schott. Besides these species, most plants differed from one village to another. Distance between the homegardens was important; homegardens in the same village were more similar than those in different villages. However, beyond the individual level, the distances alone could not be used to determine similarity. Despite the variation of species found in homegardens, the function and horizontal stratification of the Karen homegardens shared many traits. They satisfied both physical and aesthetic needs to the Karen people as witnessed by the high proportion of food and ornamental species. The reverse effects of urbanization (we used the distance from the nearest urban area as a proxy) on the diversity of ornamental species was also observed. In general, Karen homegardens had high richness and diversity which directly benefited the conservation of plant species. This diversity promotes food security at the household and community levels.     

Combining the effects of biological invasion and climate change into systematic conservation planning for the Atlantic Forest

Biological invasions and climate changes are the major causes of changes in biodiversity, which reduce, shift, and extinguish species ranges. While climate changes have been widely used in systematic conservation planning (SCP), biological invasions are rarely considered. Here, we combine the effects of climate changes and Artocarpus heterophyllus Lam. (Moraceae) invasion on the SCP for endemic aromatic fruit tree species from the Atlantic Forest (EFAF). We tested the effect of invasion on SCP measures of species turnover, biotic stability, and irreplaceability. Ecological niche models were used to establish species environmental suitability for the preindustrial period for both invasive species and EFAF and to forecast to the end of the century (2080–2100). We calculated the niche overlap between the invasive species and EFAF and tested the overlap significance using a null model. We tested the biological invasion effect on the results using results with no species invasion correction. The niche overlap between A. heterophyllus and EFAF was significant for 50% of species in the preindustrial period and for 33% in the future. The spatial patterns of species turnover, biotic stability, and irreplaceability had significant effects on biological invasion changing the spatial pattern in both shape and magnitude, which can misplace and overvalue conservation priorities. We showed that the disregard of biological invasion on SCP can cause negative effects on SCP under climate change. We strongly recommend accounting for biological invasion in the evaluation of SCP.