نتایج جستجو برای: habitat associations along the edge
تعداد نتایج: 16104352 فیلتر نتایج به سال:
Pacific herring (Clupea pallasi) has been identified as a critical species for North Pacific marine ecosystems and historically has been a commercially important species. In order to improve understanding of this key species, datasets which describe herring spawn activities were integrated with known habitat information and analyzed to determine which habitat has been critical for herring survi...
Fallow agricultural land provides habitat for threatened and declining farmland biodiversity. Policy change under the EU's Common Agricultural (CAP) has been driving area of fallows over past decades. It is still unclear, whether positive relationships between biodiversity fallow are general in time space, what landscape factors moderate them at large scales. We analysed associations species ri...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
BACKGROUND Past and current range or spatial expansions have important consequences on population genetic structure. Habitat-use expansion, i.e. changing habitat associations, may also influence genetic population parameters, but has been less studied. Here we examined the genetic population structure of a Palaeartic woodland butterfly Pararge aegeria (Nymphalidae) which has recently colonized ...
A major conservation challenge in mosaic landscapes is to understand how trait-specific responses to habitat edges affect bird communities, including potential cascading effects on bird functions providing ecosystem services to forests, such as pest control. Here, we examined how bird species richness, abundance and community composition varied from interior forest habitats and their edges into...
Harmonized information on habitat pattern, fragmentation and connectivity is one among the reporting needs of the biodiversity policy agenda. This paper presents a generic, reproducible and integrated characterisation of patterns into one modelling framework. Three available conceptual landscape model components are customised, revisited and partly combined to derive a set of indices organized ...
A key issue in habitat restoration are the changes in ecological processes that occur when fragments of habitat are lost, resulting in the persistence of habitat-degraded margins. Margins often create or enhance opportunities for negative plant-herbivore interactions, preventing natural or assisted re-establishment of native vegetation into the degraded area. However, at some distance from the ...
the fish assemblage and diversity in relation to water quality of three coastal rivers sita, swarna and varahi of udupi district, karnataka, india was studied. 71 species representing 7 orders, 20 families and 41 genera were recorded from 21 sites along the three rivers. species composition varied longitudinally in relation to the environmental factors of the habitat. the downstream change in t...
Forest fragmentation arising from modern forestry practices has dramatically increased the amount of edge habitat relative to interior habitat. Edge habitats have unique microenvironments that have the potential to profoundly impact forest communities. In this study, we characterized the forest composition and structure of edge and interior plots within a second growth big leaf maple-Douglas fi...
Central America is experiencing rapid forest loss and habitat degradation both inside and outside of protected areas. Despite increasing deforestation, the Caribbean region of Nicaragua plays an important role in the survival or extinction of large mammal populations in Central America given that it still retains core areas of habitat for large mammal species. The proposed interoceanic canal pr...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید