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41.
Kevin Lambeets Frederik Hendrickx Stijn Vanacker Kris Van Looy Jean-Pierre Maelfait Dries Bonte 《Biodiversity and Conservation》2008,17(13):3133-3148
We assessed the composition of spider and carabid beetle assemblages along river banks from the Common Meuse (Belgium) to
determine their relationships with local topographical and landscape-related characteristics. Data were gathered with pitfall
traps in 1998 and explored by ordination and grouping methods. Our analysis revealed that the presence of xerothermic spider
species was limited to scarcely covered, less dynamic gravel banks. Riparian spider species were found on frequently flooded
as well as on rather elevated and high gravel banks, while riparian carabid beetles were dominant on all sampled banks. The
level of flooding disturbance, the vegetation density and the presence of silt appeared to be the most important environmental
determinants of spider and carabid beetle assemblage structure. Consequently, local environmental factors influence species
occurrence patterns in a similar way for the two investigated arthropod groups. Nevertheless, distinct ecological groups are
differently ordered along the prime environmental gradients. Nature management should therefore consider the conservation,
restoration and connectivity of both dynamic and more elevated banks in order to obtain a high degree of local and regional
heterogeneity throughout the river system. 相似文献
42.
Katsuyuki Terada 《Mycoscience》2005,46(5):325-327
Laboulbenia ophioneae is described as a new species with illustrations. It is closely related to Laboulbenia celestialis and Laboulbenia asiatica because of some similarities in the morphology of appendages and perithecia. The present species from the latter two species
can be distinguished by the shorter, inflated perithecia, the shorter receptacles, and the appendages consisting of more or
less darkly colored, broader branches. This new species was found on elytra of Ophionea indica from Taiwan, which has been also known as a host of Laboulbenia polymorpha. A mature thallus noticed by Terada (2004) on the slide 673b (M. Ishikawa collection) and a young thallus illustrated by
Sugiyama (1978, fig. 1-G as L. polymorpha) on 673d (M. Ishikawa collection) are both identified as L. ophioneae. 相似文献
43.
'Beetle banks' as refuges for beneficial arthropods in farmland: long-term changes in predator communities and habitat 总被引:7,自引:0,他引:7
A. MacLeod S. D. Wratten† N. W. Sotherton‡ M. B. Thomas§ 《Agricultural and Forest Entomology》2004,6(2):147-154
Abstract 1 Significant differences in the overwintering densities of predatory carabid and staphylinid beetles and spiders occurred on an ‘island’ grassy bank habitat composed of blocks of Agrostis stolonifera, Dactylis glomerata, Holcus lanatus and Lolium perenne, within and between winters during a 7‐year study. 2 Densities of the predators over the last three winters of the study were greater in the bank than in the boundary of the field in which the bank was situated. 3 Succession occurred in plots of L. perenne, with D. glomerata fully replacing this species. Plots of D. glomerata and H. lanatus remained virtually mono‐specific. 4 Over the period of study, the beetle bank maintained its role in providing overwintering habitat for polyphagous predators and carabid diversity has increased since the bank was first established. Beetle banks were therefore shown to contribute to conservation biodiversity in an agroecosystem. 相似文献
44.
简要记述了步甲科中国特有属连唇步甲属Sofota Jedlieka 之鉴别特征及地理分布情况,本属原记载2种,即台湾连唇步甲S.chujoi Jedlicka(产于台湾省)和黑连唇步甲S.nigrum Tian et Chen(产于广东省).本文描述采自广东省北部的1新种:南岭连唇步甲S.nanlingense sp.nov.,并提供本属分种检索表. 相似文献
45.
彩步甲属Mastax Fischer von Waldheim在中国分布8种,分别为:布氏彩步甲M.brittoni Quentin,1952、台湾彩步甲M.formosana Dupuis,1912、盖氏彩步甲M.gestroi Bates,1892、宽斑侧步甲M.latefaciata Liebke,1931、饰彩步甲M.ornata Schmidt-Gobel,1846、杂彩步甲M.poecila Schaum,1863、美彩步甲M.pulchella Dejean,1831和大彩步甲M.thermarum(Steven,1806),其中饰彩步甲和大彩步甲为中国新纪录种.依据成虫形态特征编制了中国彩步甲属的分种检索表. 相似文献
46.
Twelve microsatellite DNA loci were newly isolated from the ground beetle Carabus insulicola, endemic to Japan, for studying mating systems. Phage vector was used for establishing genomic DNA library, and positive clones were screened with 32P‐labelled probes. Primer sequences and annealing temperature for PCR amplification were determined for each locus. Allelic polymorphism of each locus, number of alleles and observed and expected heterozygosities, were investigated based on 24 individuals. Similarity between observed and expected heterozygosities suggests random mating, and relatively low observed heterozygosity found in two loci may be due to the presence of null alleles. 相似文献
47.
C. Brouat G. Mondor‐Genson P. Audiot F. Sennedot L. Lesobre J.‐Y. Rasplus 《Molecular ecology resources》2002,2(2):119-120
We isolated and characterized 10 microsatellite loci in the ground beetle Carabus nemoralis (Coleoptera, Carabidae), an ubiquist species largely distributed in Europe. Polymorphism ranged from 3 to 12 alleles on the 30 individuals from the same locality examined. 相似文献
48.
49.
Landscape heterogeneity is a major driver of biodiversity in agricultural areas and represents an important parameter in conservation strategies. However, most landscape ecology studies measure gamma diversity of a single habitat type, despite the assessment of multiple habitats at a landscape scale being more appropriate. This study aimed to determine the effects of landscape composition and spatial configuration on life-history trait distribution in carabid beetle and herbaceous plant communities. Here, we assessed the gamma diversity of carabid beetles and plants by sampling three dominant habitats (woody habitats, grasslands and crops) across 20 landscapes in western France. RLQ and Fourth Corner three-table analyses were used to assess the association of dispersal, phenology, reproduction and trophic level traits with landscape characteristics. Landscape composition and configuration were both significant in explaining functional composition. Carabid beetles and plants showed similar response regarding phenology, i.e. open landscapes were associated with earlier breeding species. Carabid beetle dispersal traits exhibited the strongest relationship with landscape structure; for instance, large and apterous species preferentially inhabited woody landscapes, whereas small and macropterous species preferentially inhabited open landscapes. Heavy seeded plant species dominated in intensified agricultural landscapes (high % crops), possibly due to the removal of weeds (which are usually lightweight seeded species). The results of this study emphasise the roles of landscape composition and configuration as ecological filters and the importance of preserving a range of landscape types to maintain functional biodiversity at regional scales. 相似文献
50.
Exposed riverine sediments (ERS) are habitat for a large number of rare and threatened specialist species of invertebrates
and are of considerable conservation importance. Livestock trampling is believed to be one of the most widespread causes of
damage to ERS habitats in the UK, and as such, its effects were the focus of this investigation. Beetle density was measured
at two points within 25 distinct patches of habitat along ∼
∼47 km of the Afon Tywi special site of scientific interest in South Wales, which is known to support an extremely good quality
ERS beetle fauna in a UK context. Partial canonical correspondence analyses were used to explore the relationship between
beetle assemblage and a range of environmental variables. The percentage of fine (<8 mm) sediments, median sediment size,
distance downstream, cattle stocking levels, and counts of sheep faeces were found to best relate to beetle abundance and
assemblage structure. Species richness was positively associated with stocking levels, probably because of the addition of
species associated with resultant elevated levels of silt and organic matter. The ERS quality score, which is a measure of
conservation value based on the rarity of specialist ERS beetles, was negatively associated with measures of trampling damage.
It was therefore concluded that livestock trampling reduces the conservation value of beetle communities on high quality ERS
and management should restrict trampling in sites of high conservation importance. 相似文献