Has the ghost of competition passed?
... Isodars and isoclines estimate different competition coefficients. The isodar coefficient represents the average habitat-dependent effect of heterospecific individuals. The isocline coefficient is the average effect of all heterospecific individuals regardless of which habitat they or their competit ...
... Isodars and isoclines estimate different competition coefficients. The isodar coefficient represents the average habitat-dependent effect of heterospecific individuals. The isocline coefficient is the average effect of all heterospecific individuals regardless of which habitat they or their competit ...
Reptiles - Nevada Department of Wildlife
... Usually found in desert scrub habitats, semi-desert grassland and (more rarely) woodland communites along mountain foothills. Gila monsters frequent canyons or adjacent rocky slopes and occasionally open valleys. Their presence depends upon microhabitat features such as rock crevices, boulders, burr ...
... Usually found in desert scrub habitats, semi-desert grassland and (more rarely) woodland communites along mountain foothills. Gila monsters frequent canyons or adjacent rocky slopes and occasionally open valleys. Their presence depends upon microhabitat features such as rock crevices, boulders, burr ...
from pik-potsdam.de - Potsdam Institute for Climate Impact
... an earlier start to the growing season without further benefit. At the subalpine and alpine belts, milder winters or early springs are very likely to occur with warming, which can cause snow melt leading to a premature dehardening in plants, or a prevention of rehardening, especially if diurnal temp ...
... an earlier start to the growing season without further benefit. At the subalpine and alpine belts, milder winters or early springs are very likely to occur with warming, which can cause snow melt leading to a premature dehardening in plants, or a prevention of rehardening, especially if diurnal temp ...
Plant species traits are the predominant control on
... percent mass loss for each successive harvest, and decomposition constants (k) were calculated for each speciesexperiment combination (Chapin et al. 2002). The number of harvests (1–10), the length of the decomposition period before each harvest (< 30 days to > 1700 days), the fertility of the decom ...
... percent mass loss for each successive harvest, and decomposition constants (k) were calculated for each speciesexperiment combination (Chapin et al. 2002). The number of harvests (1–10), the length of the decomposition period before each harvest (< 30 days to > 1700 days), the fertility of the decom ...
Full-Text PDF
... Dispersal among Speyeria populations ranges from relatively low in Speyeria nokomis [35] and S. diana [36] to relatively high in S. coronis [37] and S. idalia [34,38]. S. diana, S. idalia, and S. nokomis represent taxa with fragmented populations that are often separated by large distances [15,35,39 ...
... Dispersal among Speyeria populations ranges from relatively low in Speyeria nokomis [35] and S. diana [36] to relatively high in S. coronis [37] and S. idalia [34,38]. S. diana, S. idalia, and S. nokomis represent taxa with fragmented populations that are often separated by large distances [15,35,39 ...
The elephant in the room: the role of failed invasions
... Gibbons 2004). Often, failure to naturalize is unknown and difficult to detect (especially for unintentional introductions), while failure to invade after naturalization is more commonly observed (Phillips et al. 2010). For this study, we reviewed the literature and searched for cases where a non-na ...
... Gibbons 2004). Often, failure to naturalize is unknown and difficult to detect (especially for unintentional introductions), while failure to invade after naturalization is more commonly observed (Phillips et al. 2010). For this study, we reviewed the literature and searched for cases where a non-na ...
THE hEAt IS ON - Defenders of Wildlife
... The snowshoe hare is a poster child for “phenological mismatch,” a phenomenon that occurs when the timing of important events in nature is not in sync. For the hare these events are day length and season. The hares change coat color in response to a release of hormones triggered by changes in season ...
... The snowshoe hare is a poster child for “phenological mismatch,” a phenomenon that occurs when the timing of important events in nature is not in sync. For the hare these events are day length and season. The hares change coat color in response to a release of hormones triggered by changes in season ...
- Wiley Online Library
... 3. During the colonization of new patches, most species were facilitated or inhibited by several others. These opposite effects can potentially have a large effect on species abundances, but they were correlated and cancelled out at the community level. Nevertheless, competition during colonization ...
... 3. During the colonization of new patches, most species were facilitated or inhibited by several others. These opposite effects can potentially have a large effect on species abundances, but they were correlated and cancelled out at the community level. Nevertheless, competition during colonization ...
Vegetation dynamics and community assembly in post
... idealistically or maybe just naively, I believe that conservation of nature should aim at removing or at least reducing the influence of anthropogenic impacts on ecosystems and not necessarily lead to a predefined state but rather a state shaped by ecological and evolutionary processes. This raises ...
... idealistically or maybe just naively, I believe that conservation of nature should aim at removing or at least reducing the influence of anthropogenic impacts on ecosystems and not necessarily lead to a predefined state but rather a state shaped by ecological and evolutionary processes. This raises ...
On the evolutionary ecology of species` ranges - People
... factors that define a species’ niche. To a first approximation, a species’ range is governed by how well its niche requirements match a spatially varying template of environmental factors (Brown, 1984). When this match fails, it is usually because of dispersal or the lack thereof. Dispersal can perm ...
... factors that define a species’ niche. To a first approximation, a species’ range is governed by how well its niche requirements match a spatially varying template of environmental factors (Brown, 1984). When this match fails, it is usually because of dispersal or the lack thereof. Dispersal can perm ...
Species at Risk Database Management System
... This population gives birth on the open arctic tundra, and most herds winter in vast subarctic forests. Well-known for its large aggregations, lengthy migrations, and significant cultural and social value to northern Aboriginal Peoples and other Canadians, its 14-15 subpopulations range from northea ...
... This population gives birth on the open arctic tundra, and most herds winter in vast subarctic forests. Well-known for its large aggregations, lengthy migrations, and significant cultural and social value to northern Aboriginal Peoples and other Canadians, its 14-15 subpopulations range from northea ...
methods - San Francisco State University
... studies have shown a decline in bay sediments over time (Foxgrover et al. 2004), and future large-scale tidal marsh restoration projects will further deplete existing bay sediments. Furthermore, in the heavily impacted Bay-Delta system, filled, diked, and developed baylands tidal systems are severel ...
... studies have shown a decline in bay sediments over time (Foxgrover et al. 2004), and future large-scale tidal marsh restoration projects will further deplete existing bay sediments. Furthermore, in the heavily impacted Bay-Delta system, filled, diked, and developed baylands tidal systems are severel ...
Consequences of low mobility in spatially and temporally
... Each model run proceeds for 100 time-steps, equivalent to 1000 years. In static landscapes, 100 steps curtailed the migration process in some cases (see below). In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating ...
... Each model run proceeds for 100 time-steps, equivalent to 1000 years. In static landscapes, 100 steps curtailed the migration process in some cases (see below). In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating ...
Where and When do Species Interactions Set Range Limits?
... test this theory, which will deepen our understanding of the forces that determine species ranges and govern responses to climate change. Abiotic and Biotic Determinants of Species Ranges The ever-mounting evidence of continuing climate change has focused attention on understanding the geographic ra ...
... test this theory, which will deepen our understanding of the forces that determine species ranges and govern responses to climate change. Abiotic and Biotic Determinants of Species Ranges The ever-mounting evidence of continuing climate change has focused attention on understanding the geographic ra ...
Proposed Listing, Special 4(d) Rule, and Critical Habitat Bi
... The proposed 4(d) special rule provides that any take of the Bi-State DPS of greater sage-grouse incidental to agricultural activities that are included within a conservation plan developed by the NRCS for private agricultural lands and consistent with NRCS’s Sage Grouse Initiative (SGI), as specifi ...
... The proposed 4(d) special rule provides that any take of the Bi-State DPS of greater sage-grouse incidental to agricultural activities that are included within a conservation plan developed by the NRCS for private agricultural lands and consistent with NRCS’s Sage Grouse Initiative (SGI), as specifi ...
SPECIES-AREA RELATIONSHIPS SPECIES-AREA REL.ATIONSHIPS
... richness of the Lowendal Islands of Western Australia. For each of 22 islands, Buckley (1982) recorded the distribution of vascular plants in three habitat types: white sand, limestone, and red sand. He next categorized the plant species according to the habitat types in which they occurred. There w ...
... richness of the Lowendal Islands of Western Australia. For each of 22 islands, Buckley (1982) recorded the distribution of vascular plants in three habitat types: white sand, limestone, and red sand. He next categorized the plant species according to the habitat types in which they occurred. There w ...
Adaptation strategy for climate-proofing biodiversity
... Adaptation strategy for climate-proofing biodiversity Adaptation strategy for climate-proofing biodiversity Over the last few decades the Netherlands has become warmer and wetter, with more extreme rainfall events. Climate scenarios indicate that these trends will continue, but the magnitude and rat ...
... Adaptation strategy for climate-proofing biodiversity Adaptation strategy for climate-proofing biodiversity Over the last few decades the Netherlands has become warmer and wetter, with more extreme rainfall events. Climate scenarios indicate that these trends will continue, but the magnitude and rat ...
Within outlying mean indexes: refining the OMI analysis for
... (one per year) on a time series of three phytoplankton species to depict their temporal niche trajectories. Hof, Rahbek & Araújo (2010) performed 14 OMI analyses (one per region and per family) to assess the phylogenetic relatedness between different amphibian families and genera within each geogra ...
... (one per year) on a time series of three phytoplankton species to depict their temporal niche trajectories. Hof, Rahbek & Araújo (2010) performed 14 OMI analyses (one per region and per family) to assess the phylogenetic relatedness between different amphibian families and genera within each geogra ...
Extinction or Survival? Behavioral Flexibility in Response
... The earth’s climate has changed multiple times at different time scales in the past, ranging from thousands to millions of years. Milankovitch’s cycles describe the collective effects of changes in the Earth’s movements upon its climate at predictable intervals of 10,000 to100,000 years [1], providi ...
... The earth’s climate has changed multiple times at different time scales in the past, ranging from thousands to millions of years. Milankovitch’s cycles describe the collective effects of changes in the Earth’s movements upon its climate at predictable intervals of 10,000 to100,000 years [1], providi ...
Extinction or Survival? Behavioral Flexibility in Response
... The earth’s climate has changed multiple times at different time scales in the past, ranging from thousands to millions of years. Milankovitch’s cycles describe the collective effects of changes in the Earth’s movements upon its climate at predictable intervals of 10,000 to100,000 years [1], providi ...
... The earth’s climate has changed multiple times at different time scales in the past, ranging from thousands to millions of years. Milankovitch’s cycles describe the collective effects of changes in the Earth’s movements upon its climate at predictable intervals of 10,000 to100,000 years [1], providi ...
pdf reprint
... abundance of sedges. Historically, these two creeks supported two of the largest St. Francis’ satyr subpopulations outside of artillery ranges, although numbers were low and in decline due to drought and woody encroachment when restoration began in 2011. As of 2014, no butterflies had been detected ...
... abundance of sedges. Historically, these two creeks supported two of the largest St. Francis’ satyr subpopulations outside of artillery ranges, although numbers were low and in decline due to drought and woody encroachment when restoration began in 2011. As of 2014, no butterflies had been detected ...
OBSERVATIONS RELATIVE TO CLAIMS OF DISAPPEARANCE OF
... 718 species of vascular plants (478 native), whereas Drayton and Primack found only 331 species (244) native, almost double the number of native species within the same study area. Equally striking was the comparison with the 1895 study of the reservation when the results of the Hamlin et al. (2012) ...
... 718 species of vascular plants (478 native), whereas Drayton and Primack found only 331 species (244) native, almost double the number of native species within the same study area. Equally striking was the comparison with the 1895 study of the reservation when the results of the Hamlin et al. (2012) ...
Biodiversity and Climate Change: Integrating Evolutionary and
... causing changes in species range limits and species extinctions from local to global scale (Parmesan 2006), there is an increasing demand to produce reliable projections of the effects of global changes on biodiversity distribution. The analysis and forecasting of species responses to climate change ...
... causing changes in species range limits and species extinctions from local to global scale (Parmesan 2006), there is an increasing demand to produce reliable projections of the effects of global changes on biodiversity distribution. The analysis and forecasting of species responses to climate change ...
Characterization of the thermal tolerances of forest ants of New England
... Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77840, USA ...
... Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77840, USA ...
Understanding the implications of climate change for woodland
... species with ‘presence‐only’ data were processed using Ecological Niche Factorization Analysis (ENFA). ANNs are proving increasingly popular because of their wide applicability and their ability to cope with complicated scenarios; these traits have commended them to ecologists who often ...
... species with ‘presence‐only’ data were processed using Ecological Niche Factorization Analysis (ENFA). ANNs are proving increasingly popular because of their wide applicability and their ability to cope with complicated scenarios; these traits have commended them to ecologists who often ...