SPOTTED OWL Strix occidentalis
... averaged 66.5 cm dbh and were found almost exclusively in Douglas-fir trees ranging from 381 to 1463 m in elevation (Buchanan et al. 1993, 1995). In contrast to wetter ecosystems, 84% (n = 85) of Spotted Owl nests were on platforms in trees created by abandoned Northern Goshawk (Accipiter gentilis) ...
... averaged 66.5 cm dbh and were found almost exclusively in Douglas-fir trees ranging from 381 to 1463 m in elevation (Buchanan et al. 1993, 1995). In contrast to wetter ecosystems, 84% (n = 85) of Spotted Owl nests were on platforms in trees created by abandoned Northern Goshawk (Accipiter gentilis) ...
INTERMEDIATE DISTURBANCE AND ITS RELATIONSHIP TO
... whether or not there are mechanisms in lakes that can create patches at appropriate spatial and temporal scales. In addition, Wilson (1994) poses the more general question of whether or not the intermediate disturbance hypothesis applies to within- or between-patch scales. The first two issues refle ...
... whether or not there are mechanisms in lakes that can create patches at appropriate spatial and temporal scales. In addition, Wilson (1994) poses the more general question of whether or not the intermediate disturbance hypothesis applies to within- or between-patch scales. The first two issues refle ...
Chapter 4. Complex Life Cycles and Marine Food Webs: Migrating
... larva begins consuming small sized zooplankton, such as early stage copepods and other crustaceans. As its length and jaw’s gape increases, ever larger zooplankton are pursued and consumed. And so it continues into juvenile and adult stages: the cod consuming larger invertebrates and small fishes, ...
... larva begins consuming small sized zooplankton, such as early stage copepods and other crustaceans. As its length and jaw’s gape increases, ever larger zooplankton are pursued and consumed. And so it continues into juvenile and adult stages: the cod consuming larger invertebrates and small fishes, ...
Management of wet grassland habitat to reduce the impact of
... habitats, even on reserves dedicated to the success of breeding waders, may not be sufficient to reverse the declines in wader populations (Stillman et al., 2006; MacDonald & Bolton, 2008). Nest predation by generalist avian and mammalian predators such as corvids, larids, red fox Vulpes vulpes and ...
... habitats, even on reserves dedicated to the success of breeding waders, may not be sufficient to reverse the declines in wader populations (Stillman et al., 2006; MacDonald & Bolton, 2008). Nest predation by generalist avian and mammalian predators such as corvids, larids, red fox Vulpes vulpes and ...
12 Terrestrial fauna - The Department of State Development
... The field program involved an initial site investigation on 29 August 2007. While data was collected opportunistically during the site investigation, the main aim was to locate potential trapping areas and accessibility. Following the initial field investigation, two systematic baseline vertebrate s ...
... The field program involved an initial site investigation on 29 August 2007. While data was collected opportunistically during the site investigation, the main aim was to locate potential trapping areas and accessibility. Following the initial field investigation, two systematic baseline vertebrate s ...
Habitat Characteristics Influencing Resident and Over
... nearly 400 million ha (Sims et al. 1978). When the degree of habitat loss from this ecotype is considered, its not surprising that avian species associated with these ecosystems are in decline. Since European settlement, most North American prairie ecosystems have lost greater than 80 % of their for ...
... nearly 400 million ha (Sims et al. 1978). When the degree of habitat loss from this ecotype is considered, its not surprising that avian species associated with these ecosystems are in decline. Since European settlement, most North American prairie ecosystems have lost greater than 80 % of their for ...
COEXISTENCE OF TEMPORALLY PARTITIONED SPINY MICE
... complex and more continuous sheltered habitat than is available in sandy deserts. Prior to this research, only two studies had included rocky desert rodents: one on density-dependent habitat selection among sandy and rocky desert rodents, which included both cobble and boulder sites (Rosenzweig and ...
... complex and more continuous sheltered habitat than is available in sandy deserts. Prior to this research, only two studies had included rocky desert rodents: one on density-dependent habitat selection among sandy and rocky desert rodents, which included both cobble and boulder sites (Rosenzweig and ...
Movement behaviour and mortality in invasive and indigenous
... attachment strength, poorer tolerance of thermal stress and a higher expression of heat shock proteins of the invasive Mytilus galloprovincialis will favour the indigenous species during high hydrodynamic and heat stress (Zardi et al. 2007, authors’ unpubl. data). However, the ecological success of ...
... attachment strength, poorer tolerance of thermal stress and a higher expression of heat shock proteins of the invasive Mytilus galloprovincialis will favour the indigenous species during high hydrodynamic and heat stress (Zardi et al. 2007, authors’ unpubl. data). However, the ecological success of ...
Allee effects, extinctions, and chaotic transients in simple population
... times are nearly exponentially distributed which is consistent with the observation that the standard deviation 13.83 and the mean 14.86 of the extinction times are approximately the same. 2.1. Mating limitation For many sexually reproducing organisms, finding mates becomes more difficult at low den ...
... times are nearly exponentially distributed which is consistent with the observation that the standard deviation 13.83 and the mean 14.86 of the extinction times are approximately the same. 2.1. Mating limitation For many sexually reproducing organisms, finding mates becomes more difficult at low den ...
Paiute Plan - Living Assessment
... limited. They are thought to have existed in only 14.7 kilometers of habitat from the base of Llewellyn Falls downstream to Silver King Canyon and including three small tributary creeks in the drainage, Tamarack Creek, Tamarack Lake Creek, and the lower reaches of Coyote Valley Creek downstream of b ...
... limited. They are thought to have existed in only 14.7 kilometers of habitat from the base of Llewellyn Falls downstream to Silver King Canyon and including three small tributary creeks in the drainage, Tamarack Creek, Tamarack Lake Creek, and the lower reaches of Coyote Valley Creek downstream of b ...
A Review of Alberta`s Draft Recovery Plan for Woodland Caribou
... stated (footnote, p.12) that the recovery team will not impose “infeasible efforts, at any JS ...
... stated (footnote, p.12) that the recovery team will not impose “infeasible efforts, at any JS ...
Salt Marsh Harvest Mouse (Reithrodontomys raviventris)
... where marsh gumplant (Grindelia stricta) can grow and offer small mammals escape cover from high tides. Some of these restored marshes will have sloping upper edges where high marsh and transition zone vegetation can develop although such slopes will be relatively narrow and seldom connected to adja ...
... where marsh gumplant (Grindelia stricta) can grow and offer small mammals escape cover from high tides. Some of these restored marshes will have sloping upper edges where high marsh and transition zone vegetation can develop although such slopes will be relatively narrow and seldom connected to adja ...
Establishing new populations 2011 September (accessible version)
... Authorised by the Victorian Government, 8 Nicholson Street, East Melbourne. Print managed by Finsbury Green Printed on recycled paper ISBN 978-1-74287-216-5 (online) For more information contact the DSE Customer Service Centre 136 186 Disclaimer This publication may be of assistance to you but the S ...
... Authorised by the Victorian Government, 8 Nicholson Street, East Melbourne. Print managed by Finsbury Green Printed on recycled paper ISBN 978-1-74287-216-5 (online) For more information contact the DSE Customer Service Centre 136 186 Disclaimer This publication may be of assistance to you but the S ...
Desert Tortoise Use of Burned Habitat in the Eastern Mojave Desert
... behavior. We made distinctions for active behaviors (basking, moving, and foraging). We recorded basking for tortoises that were on the surface often near the burrow entrance with fully extended limbs and distinctive posturing to maximize thermal exposure. We identified moving when we observed torto ...
... behavior. We made distinctions for active behaviors (basking, moving, and foraging). We recorded basking for tortoises that were on the surface often near the burrow entrance with fully extended limbs and distinctive posturing to maximize thermal exposure. We identified moving when we observed torto ...
Forest Ecology and Management Key structural forest
... ecological fluxes and interactions in forest ecosystems (Forman, 1995; Crooks and Sanjayan, 2006; Bailey, 2007). Species dispersal, pollination, and genetic interchanges are some examples of key processes that are dependent on the degree of connectivity in the forest landscape (e.g. Bailey, 2007; Ros ...
... ecological fluxes and interactions in forest ecosystems (Forman, 1995; Crooks and Sanjayan, 2006; Bailey, 2007). Species dispersal, pollination, and genetic interchanges are some examples of key processes that are dependent on the degree of connectivity in the forest landscape (e.g. Bailey, 2007; Ros ...
The spatial scaling of habitat selection by African elephants
... into the ENFA and tested whether the explicit consideration of environmental context at appropriate scales regarding food and water resources increased the quantified level of habitat selectivity. Lastly, we predicted habitat suitability (HS) within the available area using a MADIFA on all environmen ...
... into the ENFA and tested whether the explicit consideration of environmental context at appropriate scales regarding food and water resources increased the quantified level of habitat selectivity. Lastly, we predicted habitat suitability (HS) within the available area using a MADIFA on all environmen ...
grade 12 life sciences learner notes
... Seeds are stored in cool, dry and sterile conditions and kept at –10 to –20 ºC, which may cause damage to the DNA in some plant species. Seeds of most species remain viable for more than 100 years in these conditions. Seed banks can be used to store seeds when the crop yield is high, like mone ...
... Seeds are stored in cool, dry and sterile conditions and kept at –10 to –20 ºC, which may cause damage to the DNA in some plant species. Seeds of most species remain viable for more than 100 years in these conditions. Seed banks can be used to store seeds when the crop yield is high, like mone ...
fragmentation of terrestrial habitat
... public and private dollars have been spent on habitat acquisition and wildlife conservation efforts to offset the effects of fragmentation. Recently, however, the conceptual basis of habitat fragmentation has been questioned along with how it is assessed. The primary reasons for questioning the conc ...
... public and private dollars have been spent on habitat acquisition and wildlife conservation efforts to offset the effects of fragmentation. Recently, however, the conceptual basis of habitat fragmentation has been questioned along with how it is assessed. The primary reasons for questioning the conc ...
diversity, ecosystem function, and stability of parasitoid
... of another species (Cardinale et al. 2002, 2003), and (3) niche partitioning or resource complementarity, whereby a more diverse array of consumers allows greater saturation of niche space and more efficient overall utilization of food resources (Hooper et al. 2005). While resource complementarity ha ...
... of another species (Cardinale et al. 2002, 2003), and (3) niche partitioning or resource complementarity, whereby a more diverse array of consumers allows greater saturation of niche space and more efficient overall utilization of food resources (Hooper et al. 2005). While resource complementarity ha ...
Western Screech-Owl kennicottii subspecies,Megascops kennicottii
... The Western Screech-Owl is nonmigratory; pairs defend territories year-round. They are generalist predators, feeding primarily on small mammals and large insects, but also small birds, fish, frogs, and slugs. Young birds disperse from their natal territories in late summer. Population Sizes and Tren ...
... The Western Screech-Owl is nonmigratory; pairs defend territories year-round. They are generalist predators, feeding primarily on small mammals and large insects, but also small birds, fish, frogs, and slugs. Young birds disperse from their natal territories in late summer. Population Sizes and Tren ...
Diet–demography relationships in a long
... high preferred prey abundance may increase its consumption and enhance predator breeding success and survival (Korpimäki and Norrdahl 1991, Millon and Bretagnolle 2008). By contrast, the scarcity of the preferred prey will force predators to expand their diet and to consume alternative prey (Schoene ...
... high preferred prey abundance may increase its consumption and enhance predator breeding success and survival (Korpimäki and Norrdahl 1991, Millon and Bretagnolle 2008). By contrast, the scarcity of the preferred prey will force predators to expand their diet and to consume alternative prey (Schoene ...
MATHEMATICAL MODELS IN POPULATION DYNAMICS BY
... steady and stable is, in fact, the result of forces acting in cohort to produce a balance of ...
... steady and stable is, in fact, the result of forces acting in cohort to produce a balance of ...
Determining How Varying Severity of Forest Fragmentation Effect
... public lands within the United States may be too small and fragmented for sufficient preservation of biodiversity (Haddad et al., 2015). Protected areas contain roads and trails that are fundamental in providing access to forested ecosystems for recreation use. They allow people to experience and st ...
... public lands within the United States may be too small and fragmented for sufficient preservation of biodiversity (Haddad et al., 2015). Protected areas contain roads and trails that are fundamental in providing access to forested ecosystems for recreation use. They allow people to experience and st ...
Changing Seascapes, Stochastic Connectivity, and Marine
... as mesoscale eddies and alongshore jets, produce potential connectivity that is highly variable in time. We assess the impact of this temporal variability by comparing simulations of nearshore metapopulation dynamics when potential connectivity is constant through time (i.e., when it is deterministi ...
... as mesoscale eddies and alongshore jets, produce potential connectivity that is highly variable in time. We assess the impact of this temporal variability by comparing simulations of nearshore metapopulation dynamics when potential connectivity is constant through time (i.e., when it is deterministi ...