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1.
Using faunal analysis, this article outlines a coastal mammalian harvesting pattern involving a few terrestrial mammals whose biomass appears to have been greater when associated with man than under natural conditions. Archeological evidence suggests that these animals fed regularly on cultivated crops and were hunted in house gardens and cultivated fields. By concentrating the supply of both carbohydrates and animal protein, garden hunting may have eliminated seasonality and scheduling problems. And because it artificially increased the biomass of selected animals, it may have functioned as a substitute for animal domestication.  相似文献   

2.
Howard S. Irwin 《Brittonia》1996,48(3):365-371
Memories of employment at The New York Botanical Garden between 1960 and 1980 are given.  相似文献   

3.
One way the public can engage in insect conservation is through wildlife gardening, including the growing of insect-friendly flowers as sources of nectar. However, plant varieties differ in the types of insects they attract. To determine which garden plants attracted which butterflies, we counted butterflies nectaring on 11 varieties of summer-flowering garden plants in a rural garden in East Sussex, UK. These plants were all from a list of 100 varieties considered attractive to British butterflies, and included the five varieties specifically listed by the UK charity Butterfly Conservation as best for summer nectar. A total of 2659 flower visits from 14 butterfly and one moth species were observed. We performed a principal components analysis which showed contrasting patterns between the species attracted to Origanum vulgare and Buddleia davidii. The “butterfly bush” Buddleia attracted many nymphalines, such as the peacock, Inachis io, but very few satyrines such as the gatekeeper, Pyronia tithonus, which mostly visited Origanum. Eupatorium cannibinum had the highest Simpson’s Diversity score of 0.75, while Buddleia and Origanum were lower, scoring 0.66 and 0.50 respectively. No one plant was good at attracting all observed butterfly species, as each attracted only a subset of the butterfly community. We conclude that to create a butterfly-friendly garden, a variety of plant species are required as nectar sources for butterflies. Furthermore, garden plant recommendations can probably benefit from being more precise as to the species of butterfly they attract.  相似文献   

4.
The aim of this study was to register the zooplanktonic organisms in water bodies in the Zoological Garden in Kraków, especially from a point of view of the occurrence of species of the Paramecium aurelia complex. Only P. caudatum was found in one habitat, in several sampling places. The species seems very resistant and can survive in poor or polluted habitats in which the P. aurelia ssp. are eliminated.  相似文献   

5.
  • 1 Garden warblers are able to learn to go to four different feeding places at different times of day (time-place learning). We investigated whether or not the birds rely on a fixed route by preventing them from entering one of the places at the normal time (blocking experiments). At the end of the blocking period the birds were allowed to visit any of the four feeding places.
  • 2 In two such blocking experiments, one in which the blocking period was first thing in the morning (from 06.00–10.00 h), the other in which it was later in the day (from 12.00–16.00 h), there was no subsequent shift in the phase of visiting the places during the rest of the day, apart from a tendency to go to the first place of the day after the morning block. These results suggest that the birds do not rely on following a fixed route, but instead use a time-place map.
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6.
The persistent finding of clades endemic to the southern continents (Afrotheria and Xenarthra) near the base of the placental mammal tree has led molecular phylogeneticists to suggest an origin of Placentalia, the crown group of Eutheria, somewhere in the southern continents. Basal splits within the Placentalia have then been associated with vicariance due to the breakup of Gondwana. Southern-origin scenarios suffer from several problems. First, the place of origin of Placentalia cannot be reconstructed using phylogenetic reasoning without reference to outgroups. When available outgroups are considered, a Laurasian origin is most parsimonious. Second, a model of pure vicariance would require that basal placental splits occurred not with the breakup of Gondwana, but of Pangea in the Late Triassic—Early Jurassic. This event long preceded even the oldest molecular divergence estimates for the Placentalia and was coeval only with the earliest mammals in the fossil record. Third, a problem with the number of dispersal events that would be required emerges under different southern-origin scenarios. In considering the geographic distribution of the major placental clades at their first appearance (mostly Early Cenozoic), it becomes clear that a Laurasian center of origin would require fewer dispersal events. Southern-origin models would require at least twice the number of dispersal events in comparison with a model of Laurasian origins. This number of required dispersal events increases if extinct groups of placental mammals are also considered. Results are similar assuming a morphology-based phylogeny. These facts, along with earlier findings speaking against a major placental radiation deep in the Cretaceous without leaving fossil evidence, suggest an origin of Placentalia somewhere in Laurasia with few supraordinal splits occurring before the last 5–10 million years of the Cretaceous.  相似文献   

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9.
Aims Seasonality is the typical characteristic of plant landscape in Beijing, including seasonal dynamics of plant phenology. We analyzed the seasonal changes in phenology of 120 deciduous trees in Beijing Botanical Garden, with additional efforts on an innovative methodology in studying plant phenology. Methods Based on the standards of the Chinese Phenological Observation Method, three-level Phenological Code (a, b, and c) was used to recode the phenology data. Our data analysis was performed with “pentad” (5-day period) in 24 Solar Terms. Analytical methods include a frequency distribution method to explore the division of phenophases and their dynamic constitution. The frequency distribution statistics in SPSS 20.0 were applied to explore the temporal dynamics in occurrence time and duration for different types of phenophases. Important findings We found that: The division of phenological seasons and their phenological constitution as: 6th–19th pentad for Spring, with 54.03% of the whole phenophases that are featured with sprouting, leaf spreading and flowering; 20th–45th pentad for Summer, with 12.95% of phenophases that include conclusions of leaf spreading for all trees, intensive fruiting, fewer flowering, and autumn-leaf scenery in late summer; 46th–59th pentad for Autumn, with 27.19% of the phenophases that are characterized with leaf discoloration and defoliation, some fruiting, and very few flowering; and 60th pentad for Winter, with 0.6% of phenophases that are all constituted with defoliation. The temporal distribution pattern of different kinds of phenophases is as follows. The leaf-unfolding phenophases span from 3rd to 23rd pentad and averagely last for 3.27 pentads, with Sorbaria kirilowii as one of the earliest leaf-unfolding species. The leaf coloration phenophases happen between 40th –63rd pentad, with Tilia mongolica and Armeniaca sibirica as the earliest species to show fall-color leaf. The autumn-leaf duration lasts for 8.2 pentads in average, with Euonymus alatus and Sambucus williamsii as the typical species that show longer leaf duration. The leaf period averagely lasts for 44.2 pentads, with Abelia chinensis, Salix matsudana and Kerria japonica holding the longest leaf time. The flowering-type phenophases happen during 1st–53rd pentad, with 8th–23rd pentad as the best ornamental period, and three species (Chimonanthus praecox, Jasminum nudiflorum and Ulmus pumila) as the earliest blooming species and Elsholtzia stauntoni as the last one to bloom. The flowering period lasts for 6.7 pentads in average, with Sorbaria kirilowii, Hibiscus syriacus and Lagerstroemia indica showing the longest flowering time. The fruiting-type phenophases happen between 8th–59th pentad, with Ulmus pumila and Lonicera fragrantissima as the earliest species for fruit maturation. The fruiting duration averagely lasts for 29.0 pentads, and those species that do not lose fruits during the winter and some other species with longer fruit holding period though falling fruits completely in winter such as Viburnum melanocarpum and Physocarpus opulifolius ‘Luteus’ have longer ornamental time of fruit scenery. Compared with a counterpart research in the 1980s, this study reveals that spring in 2017 came earlier by a pentad than that 30 years ago while autumn came later by 3 pentads; additionally, autumn duration shortened by 2 pentads while summer duration prolonged by 4 pentads, resulting in larger differences between the duration of the four seasons. © Chinese Journal of Plant Ecology.  相似文献   

10.
Conservation management has undergone a dramatic paradigm shift from the strong ‘wilderness conservation’ ethos of the 1980s and 1990s to the ‘biodiversity on degraded lands’ ethos of recent years. Most conservation biologists now consider that wilderness conservation alone is no longer sufficient to conserve biodiversity, and conservation strategies must also demand more effective protection for biodiversity on degraded lands. Recognition of this shifting paradigm in biodiversity conservation has led to an overt change in tone of recent studies, emphasizing relatively modest effects of human disturbance, and high biodiversity values on some degraded lands. A case in point is a series of studies from Southeast Asia reporting relatively modest impacts of logging on biodiversity, with the majority of species (75%) persisting after repeated intensive logging. This is a marked shift in conservation message after >30 yrs of research showing substantial adverse effects of logging on biodiversity, and raises serious questions about the appropriate ways to qualify the conflicting messages that ‘human impact degrades biodiversity’ yet ‘degraded habitats have high biodiversity value.’ Clearly logging is the lesser of two land‐use evils compared with conversion to intensive cattle pastures, crop fields or oil palm plantations, but there is a real risk that overselling the ‘biodiversity on degraded lands’ paradigm might end up being a double‐edged sword for conservation management. After all, if >75 percent of species are resilient to repeated logging, why bother trying to preserve the few remaining wilderness areas from being logged themselves? It remains to be seen whether this new message of ‘weak’ effects of logging on biodiversity will serve its strategic purpose of conserving biodiversity on degraded lands, or simply devalue the last vestiges of wild nature.  相似文献   

11.
Done well, citizen science projects can gather datasets of a size and scope far larger than would be possible using professional researchers. This study uses data gathered in Britain by the Garden Moth Scheme (GMS). Participants run garden light traps for at least 26 weeks a year and complete garden questionnaires detailing garden habitat and nearby landscape features. We used data exploration and generalised linear modelling (GLM) to investigate whether the data can be used to generate reliable research findings, testing the effect of moth light trap type on moth catch. Robinson traps, then Skinner traps, then Heath traps were found to catch the highest abundance and diversity of moths. Mercury vapour bulbs, then blended light bulbs, then actinic bulbs collected the highest abundance and diversity of moths. The GMS dataset can be used to generate useful and reliable research findings, and can be used in the future to investigate temporal and spatial trends in moth assemblage. Under international law, the use of mercury vapour bulbs will be phased out in coming years, leading to changes in the way moth assemblages are sampled. Information on the relative efficacy of different bulb types will aid the analysis of long‐term moth datasets after these changes.  相似文献   

12.
The aim of this study was to register the zooplanktonic organisms in water bodies in the Botanical Garden of the Jagiellonian University in Kraków, especially from the point of view of the occurrence of species of the Paramecium aurelia complex. In one pond, artificially constructed, the presence of P. tetraurelia was revealed.  相似文献   

13.
Summary

From 1723 to 1796 the Society of Apothecaries of London presented annually to the Royal Society of London 50 dried specimens of plants grown the previous year in the Chelsea Physic Garden, this being a condition of Sir Hans Sloane's deed of gift of the Garden to the Apothecaries in 1722. These herbarium specimens are now in the Department of Botany, British Museum (Natural History), London. Many represent plants recorded in successive editions of Philip Miller's Gardeners Dictionary and, together with Miller's own specimens also in the British Museum (Natural History) and Ehret's drawings, may serve to typify binomials published in the 8th edition (1768) of his Dictionary. They were listed from 1723 to 1774 in the Philosophical Transactions of the Royal Society; the lists here contain six long-overlooked binomials Galium verrucosum Huds. (syn. G. valantia Weber), Gypsophila pilosa Huds. (syn. G. porrigens (L.) Boiss), Briza pinnata Huds. (= Demazeria sicula (Jacq.) Dumort.) Euphorbia hispanica Huds. (= E. esula var. lanceolata Gren. & Godron), Pteris cheusanica Curtis (= P. ensiformis Burm. f.) and Saxifraga stolonifera Curtis (syn. S. sarmentosa L.). The deed of conveyance is printed as an appendix.  相似文献   

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15.
Komala Z  Przyboś E 《Folia biologica》2001,49(3-4):225-228
The presence of P. tetraurelia was found in the pond in "The Palm-House" greenhouse.  相似文献   

16.
The little fire ant Wasmannia auropunctata is known to negatively impact the native fauna of tropical islands in the Pacific and its sting is a nuisance to farmers in their garden plots. We examine whether the presence of the little fire ant has the potential to disrupt subsistence gardening practices, with implications for livelihoods and wellbeing. We used structured questionnaires, analysed quantitatively, with 90 participants from the Central Bauro area, Makira, the Solomon Islands, and more detailed semi-structured interviews, analysed qualitatively, with another six people. Our results show that the presence of the little fire ant affects gardening activities by reducing time spent working effectively, influencing decisions about where to make gardening plots, discouraging children’s participation, and changing traditional gardening practices. We also find that the longer the ant is present, the more tolerant Central Bauro subsistence farmers become of its presence.  相似文献   

17.
The Itzamma Garden and Medicinal Plant Project is a collaborative effort focused on identifying traditionally important plants used by the Q'eqchi' Maya of southern Belize. The Garden represents a cornerstone of the project where these plant resources (~130 in total, of which 102 have been identified to the species level) are cultivated ex situ as a means of providing primary healthcare by traditional healers. Here, we present a comprehensive agro-ecological survey of the Garden describing the layout and cultivation scenarios, development challenges encountered, and associated implementation strategies for improving site practices. A general recommendation for the adaptation of this strategy to other localities is the thorough depiction of ecological features based on interactions with local practitioners, for example, leading to the effective cultivation of plants, the enhancement of soil, and the surveillance of crop nutritional status and medicinal potency. We consider that the ‘ethnobotanical garden approach’ could provide a collaborative ‘working model’ for rural development, especially indigenous communities interfacing with their local agro-ecosystems.  相似文献   

18.
Living botanic garden plant collections are a fundamental and underutilized worldwide resource for plant conservation. A common goal in managing a botanical living collection is to maintain the greatest biodiversity at the greatest economic and logistic efficiency. However to date there is no unified strategy for managing living plants within and among botanic gardens. We propose a strategy that combines three indicators of the management priority of a collection: information on species imperilment, genetic representation, and the operational costs associated to maintaining genetic representation. In combination or alone, these indicators can be used to assay effectiveness and efficiency of living collections, and to assign a numeric conservation value to an accession. We illustrate this approach using endangered palms that have been studied to varying degrees. Management decisions can be readily extended to other species based on our indicators. Thus, the conservation value of a species can be shared through existing databases with other botanic gardens and provide a list of recommendations toward a combined management strategy for living collections. Our approach is easily implemented and well suited for decision-making by gardens and organizations interested in plant conservation.  相似文献   

19.
Przyboś E  Komala Z 《Folia biologica》2000,48(3-4):149-150
In a natural but newly reconstructed pond the presence of P. biaurelia was revealed. The previous studies conducted in 1992 did not reveal the occurrence of any species of the Paramecium aurelia complex here.  相似文献   

20.
The zoological garden in The Hague, the de facto capital of the Netherlands, founded in 1863, was forced to close during the Second World War in 1943 by order of the German occupation forces. An attempt to reconstruct its history from the point of view of a zoologist shows that in eighty years about 180 species of mammals were kept; the garden acquired a certain fame because of its primate collection, e.g., having early success with Sumatran Orang-utan (Pongo abelii), and the discovery of the Black Mangabey (Cercocebus aterrimus) in 1890. Many unusual, nowadays rare, species [e.g., Ursine Tree Kangaroo (Dendrolagus ursinus), Sumatran Bamboo Rat (Rhizomys sumatranus), Marbled Cat (Pardofelis marmorata), Malay Tapir (Tapirus indicus)] were present at times, occasionally also on deposit from animal dealers. The majority of the animals originated from the Netherlands East Indies (now Indonesia) and were donated by colonial residents, such as Sumatran Elephant (Elephas maximus sumatranus) and Orang-utan. The colony of Surinam in South America was another supplier of zoo animals and until the 1880s animals were also derived from a few Dutch trading posts in West Africa. The bird collections were always rich and varied, initially specializing in local species. Later this collection became more comprehensive; attention is drawn to early success with birds of paradise and the presence of now extinct species such as the Carolina Parakeet (Conuropsis carolinensis) and the Passenger Pigeon (Ectopistes migratorius). Series of lower vertebrates [among them the Japanese Giant Salamander (Andrias japonicus)] and invertebrates were always on display in a modest aquarium. At the turn of the century the Netherlands only harboured three zoological gardens (Amsterdam – 1838; Rotterdam – 1857; The Hague – 1863). The one in The Hague, although subject to an almost permanent financial crisis, nevertheless succeeded in playing a modest role in this field of zoological science.  相似文献   

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