نتایج جستجو برای: habitat simulation

تعداد نتایج: 611843  

اکبری, حسن, موسوی‌, سید جلال, حبیبی پور, اعظم,

Chinkara is classified as a vulnerable species (IUCN, 2009). Yet, there is a little information on its biological characteristics and habitat in Iran. This study focuses on the habitat preference and social pattern of this species in Dareh-Anjeer wildlife refuge in 2010-2011. We first determined habitat boundaries of Chinkara in the area. During the survey, 15 transects were located within diff...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Todd R Lookingbill Robert H Gardner Joseph R Ferrari Cherry E Keller

Assessing the potential for threatened species to persist and spread within fragmented landscapes requires the identification of core areas that can sustain resident populations and dispersal corridors that can link these core areas with isolated patches of remnant habitat. We developed a set of GIS tools, simulation methods, and network analysis procedures to assess potential landscape connect...

2016
Ivo Machar Jaroslav Simon Klement Rejsek Vilem Pechanec Jan Brus Helena Kilianova

The remnants of primeval Norway spruce forests in the European temperate zone are crucial for maintaining forest biodiversity in high mountain landscapes. This paper presents results of a multidisciplinary research and evaluation project on the management practices for mountain spruce forests in the Natura 2000 site (National Nature Reserve Serak-Keprnik in the Hruby Jesenik Mountains, the Czec...

Journal: :Applied and environmental microbiology 2011
Eric D Becraft Frederick M Cohan Michael Kühl Sheila I Jensen David M Ward

Past analyses of sequence diversity in high-resolution protein-encoding genes have identified putative ecological species of unicellular cyanobacteria in the genus Synechococcus, which are specialized to 60°C but not 65°C in Mushroom Spring microbial mats. Because these studies were limited to only two habitats, we studied the distribution of Synechococcus sequence variants at 1°C intervals alo...

2012
Jana Caletková Michaela Klímová Dana Komínková

This article is focused on definition and identification of optimal ecological flow for macrozoobenthos communities in small urban creeks affected by urban drainage using the Physical HABitat Simulation (PHABSIM) system. It describes the process of determination of ecological flows, from field measurement to determined values. Results show that combine sewer overflows and storm water drains neg...

2005
P. MARCOS GORRESEN MICHAEL R. WILLIG RICHARD E. STRAUSS

The assessment of biotic responses to habitat disturbance and fragmentation generally has been limited to analyses at a single spatial scale. Furthermore, methods to compare responses between scales have lacked the ability to discriminate among patterns related to the identity, strength, or direction of associations of biotic variables with landscape attributes. We present an examination of the...

2015
Cristian S. Dambros Nilton C. Cáceres Luiza Magnus Nicholas J. Gotelli

Methods Using neutral models and mid-domain effect models, we simulated species spread in a spatially explicit array of grid cells representing the Atlantic Forest domain. We compared empirical patterns of species richness and composition with predictions of the neutral and mid-domain effect models. We also modeled individual species responses to climatic conditions and forest integrity, a meas...

Habitat analysis using landscape metrics can be efficient in better management of habitat. As a critically endangered subspecies, the Baluchistan black bear is scattered in the Bahr Asman and Zaryab areas in Kerman province. The purpose of this study was to model the distribution of the sub-species and evaluate the quality of its habitat patches, using landscape metrics. Distribution modeling w...

2013

In local reef fish communities, species richness increases with increasing reef area. At Ishigaki Island, Japan, species richness is much lower on large reefs in the shallow back reef than that expected from random placement model simulations (RPMS). As three aggressive territorial herbivorous damselfish, Stegastes nigricans, Stegastes lividus and Hemiglyphidodon plagiometopon, coexist only on ...

2003
James N. Sanchirico

Marine reserves are gaining attention around the world as a tool to both conserve ocean resources and improve the productivity of fisheries. Using simulation analysis, we investigate in a limited-entry fishery comprising nine subpopulations the inherent bioeconomic trade-offs associated with cost-effective designs of marine reserve networks—that is, the trade-offs between the degree of connecte...

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