The analysis of biotic diversity using pictographs has shown various changes after long-term deforestation and under short-term disturbance of forest habitats. The biomass of small mammals was similar in all types of forest habitats; it was higher in meadows and dropped in the young (9-year) forest in the former field. The total biomass of settled and nonresident population has been considered. Though the numbers of species as well as the diversity structure vary, the biomass of settled population is similar in all types of forest habitats. Nonresident population contributes to general biomass the more the greater habitat is disturbed. The relevant sustainability of general biomass is considered in terms of biocenotic compensation. Biocenosis is regarded as a system having an inclination to “autonomous” functioning.
Species diversity and abundance of small mammals were studied in Nechisar National Park, Ethiopia, during August 2008 – March 2009. Twenty species of rodents and four species of insectivores were recorded from the study area. Mastomys natalensis (17.37%), Arvicanthis dembeensis (17.09%), Mastom...
The authors analyze the data of a 12-year monitoring of small mammal populations with live-catch cage traps, snap traps, and pitfall traps. Eighteen species were trapped. Biotopical distributions of the species are outlined. The study shows that snap-trapping and pitfall-trapping results are not ...
Trait-based resource competition in plants, wherein more similar plants compete more strongly for resources, is a foundation of niche-based explanations for the maintenance of diversity in plant communities. Alternatively, neutral theory predicts that community diversity can be maintained despite...
Macroalgal mats occur seasonally in many estuaries worldwide but there is little information on their short- or long-term effects on the abundance or resilience of macrofauna. Within a small estuary, with a history of exposure to algal mats (Avon-Heathcote Estuary, Christchurch, New Zealand), we ...
The study addresses the distribution and diversity of mesozooplankton near the active volcano-Barren Island (Andaman Sea) in the context of persistent volcanic signature and warm air pool existing for the last few months. Sampling was done from the stations along the west and east side of the vol...
submitted by ffirnondadeozs 1 year and 6 months ago
Knowledge of population structure and genetic diversity and the spatio-temporal demographic processes affecting populations is crucial for effective wildlife preservation, yet these factors are still poorly understood for organisms with large continuous ranges. Available population genetic data r...
Environmental heterogeneity in natural ecosystems influences several parameters at the population and community levels. In freshwater ecosystems, habitat heterogeneity can be provided by macrophyte species with different structural shapes. Previous studies suggest that aquatic plants with more co...
Factors linked with intraspecific variation in trophic diversity are still poorly understood in generalist species like the Montagu’s harrier (Circus pygargus) but may have important implications for conservation management at a wide scale. We described geographic patterns of Montagu’s harrie...
Observed patterns of genetic variability among marine populations are shaped not only by contemporary levels of gene flow, but also by divergences during historical isolations. We examined variability at 15 SNP loci and in mtDNA sequences (COI, 665 bp) in red king crab from 17 localities in the ...
In heterogeneous landscapes, divergent selection can favor the evolution of locally adapted ecotypes, especially when interhabitat gene flow is minimal. However, if habitats differ in size or quality, source-sink dynamics can shape evolutionary trajectories. Upland and bottomland forests of the s...
