Interim koala referral advice for proponents
... of individuals to move from one habitat patch to another. If two groups of koalas are separated by a substantial barrier to movement (e.g. river, mountain range, greater than15 km of cleared rural land or artificial barriers), and there is very little likelihood of exchange of individuals between th ...
... of individuals to move from one habitat patch to another. If two groups of koalas are separated by a substantial barrier to movement (e.g. river, mountain range, greater than15 km of cleared rural land or artificial barriers), and there is very little likelihood of exchange of individuals between th ...
article - Aquatic Invasions
... The establishment of nonnative species and subsequent replacement of native species is among the greatest threats to freshwater biodiversity worldwide. However, little is known of the effects that invasive species have on individual species and specific mechanisms by which species displacement occur ...
... The establishment of nonnative species and subsequent replacement of native species is among the greatest threats to freshwater biodiversity worldwide. However, little is known of the effects that invasive species have on individual species and specific mechanisms by which species displacement occur ...
The influence of multiple factors upon reef fish abundance and
... the area south to the Formoso River and has less tourism, however, supports more artisanal fishing activities. The depth range is similar to Site 1; however, the diversity and abundance of macroalgae are smaller. Fish and benthos community data. Underwater visual census (UVC) was performed every 15 ...
... the area south to the Formoso River and has less tourism, however, supports more artisanal fishing activities. The depth range is similar to Site 1; however, the diversity and abundance of macroalgae are smaller. Fish and benthos community data. Underwater visual census (UVC) was performed every 15 ...
Dynamic Energy Budget model parameter estimation for the bivalve
... classes available to represent biometrics of subtidal individuals. Approximately 5 animals were sacrificed per size class (size class = every 2 cm, ranging from 1 cm to 19 cm) over 3 transects spanning the low rocky intertidal zone. Biometric data include shell length and somatic tissue weight. To ob ...
... classes available to represent biometrics of subtidal individuals. Approximately 5 animals were sacrificed per size class (size class = every 2 cm, ranging from 1 cm to 19 cm) over 3 transects spanning the low rocky intertidal zone. Biometric data include shell length and somatic tissue weight. To ob ...
Adults - Gopher Tortoise Day
... URTD is a disease that tortoises contract through contact with each other. Tortoises may not show symptoms and it is highly contagious. This is one reason why it is important that only professionals relocate tortoises to avoid introducing an infected tortoise into a healthy habitat. ...
... URTD is a disease that tortoises contract through contact with each other. Tortoises may not show symptoms and it is highly contagious. This is one reason why it is important that only professionals relocate tortoises to avoid introducing an infected tortoise into a healthy habitat. ...
Spatiotemporal Model of Barley and Cereal Yellow Dwarf Virus
... which suggested that the virus could reverse the competitive outcome between perennial and annual host grasses, leading to the successful invasion by the competitively inferior annuals. However, continued existence of B/CYDV requires the persistence of the perennial grass in the community due to its ...
... which suggested that the virus could reverse the competitive outcome between perennial and annual host grasses, leading to the successful invasion by the competitively inferior annuals. However, continued existence of B/CYDV requires the persistence of the perennial grass in the community due to its ...
Niche Expansion and Contraction in a Variable Environment1
... variation in seed production in the northern portion of the wintering range. As shown in Figure 2, in contrast to the increase in the density of Chipping Sparrows in the northern portion of the wintering range, when seed production was high, the relative density of Chipping Sparrows in the southern ...
... variation in seed production in the northern portion of the wintering range. As shown in Figure 2, in contrast to the increase in the density of Chipping Sparrows in the northern portion of the wintering range, when seed production was high, the relative density of Chipping Sparrows in the southern ...
On the organization of ecosystems Veldhuis, Michiel
... 1998). Surprisingly, although the complex (adaptive) systems perspective has revolutionized other fields in biology as cell biology, genetics and developmental biology, the field of systems ecology seems to be losing ground, possibly because it seems to lack generally accepted theories or principles ...
... 1998). Surprisingly, although the complex (adaptive) systems perspective has revolutionized other fields in biology as cell biology, genetics and developmental biology, the field of systems ecology seems to be losing ground, possibly because it seems to lack generally accepted theories or principles ...
Enhancing species distribution modeling by characterizing predator
... Kamler et al. 2012). Here, we show how embedding concepts from RST into SDM can enhance understanding of environmental conditions that determine species presence across geographic space. A priori, one would expect the SDM to encompass a wide range of activities and behaviors (i.e., hunting, defendin ...
... Kamler et al. 2012). Here, we show how embedding concepts from RST into SDM can enhance understanding of environmental conditions that determine species presence across geographic space. A priori, one would expect the SDM to encompass a wide range of activities and behaviors (i.e., hunting, defendin ...
Feeding Relationships Among Species of Notropis (Pisces
... species. Standard lengths of N. dorsalis in Rox- The small isolated populations of N. dorsalis in the bury Creek ranged from 31 to 60 mm. east, the subspecies N. d. keimni is thought to be a All four species are silvery and lack lateral bands. relict of this earlier, drier time (Trautman 1957). Both ...
... species. Standard lengths of N. dorsalis in Rox- The small isolated populations of N. dorsalis in the bury Creek ranged from 31 to 60 mm. east, the subspecies N. d. keimni is thought to be a All four species are silvery and lack lateral bands. relict of this earlier, drier time (Trautman 1957). Both ...
Disturbance and trajectory of change in a stream fish community
... stability (Bloom 1980; Santos and Bloom 1980; Hughes 1990; Vieira et al. 2004; Magalhães et al. 2007), identify alternative community states (Warwick et al. 2002; Daufresne et al. 2007), or detect changes after perturbation (Boulton et al. 1992; Adjeroud et al. 2009; Muehlbauer et al. 2011). These ...
... stability (Bloom 1980; Santos and Bloom 1980; Hughes 1990; Vieira et al. 2004; Magalhães et al. 2007), identify alternative community states (Warwick et al. 2002; Daufresne et al. 2007), or detect changes after perturbation (Boulton et al. 1992; Adjeroud et al. 2009; Muehlbauer et al. 2011). These ...
articolo completo - Società Italiana Scienza della
... threshold in the loss of biodiversity above which the ecosystems cannot function. Also, with less species the ecosystem is more vulnerable against any sudden change in the site conditions. It is known that biodiversity is a result of the historical evolutionary process and that ecosystems can often ...
... threshold in the loss of biodiversity above which the ecosystems cannot function. Also, with less species the ecosystem is more vulnerable against any sudden change in the site conditions. It is known that biodiversity is a result of the historical evolutionary process and that ecosystems can often ...
PDF Version
... tests: all P < 0.005). Group size for events was larger (Mann-Whitney test: P = 0.027) and contained more species (Mann-Whitney test: P < 0.001) at SEUS reefs (median group size = 8.0, median number of species = 2.0) than in the GOM (median group size = 5.0, median number of species = 1.0). Events w ...
... tests: all P < 0.005). Group size for events was larger (Mann-Whitney test: P = 0.027) and contained more species (Mann-Whitney test: P < 0.001) at SEUS reefs (median group size = 8.0, median number of species = 2.0) than in the GOM (median group size = 5.0, median number of species = 1.0). Events w ...
Trophic Dynamics in Urban Communities By
... (Sullivan and Flowers 1998). Most of the anthropogenic changes in species composition have been indirect. Alterations have resulted mainly from historical changes in land use rather than intentional human manipulation or extirpation of species. Desert habitats were converted to agricultural and, mo ...
... (Sullivan and Flowers 1998). Most of the anthropogenic changes in species composition have been indirect. Alterations have resulted mainly from historical changes in land use rather than intentional human manipulation or extirpation of species. Desert habitats were converted to agricultural and, mo ...
Imperio et al 2012_Oikos
... (Focardi et al. 2006, Ferretti et al. 2008). More specifically, Focardi et al. (2006) showed that the reduction of habitat quality by fallow deer negatively affects the phenotypic quality of Italian roe deer at Castelporziano. Competition and facilitation for resources are widely accepted as mechan ...
... (Focardi et al. 2006, Ferretti et al. 2008). More specifically, Focardi et al. (2006) showed that the reduction of habitat quality by fallow deer negatively affects the phenotypic quality of Italian roe deer at Castelporziano. Competition and facilitation for resources are widely accepted as mechan ...
Ecology of a sympatric pair of coregonid fish: Species interactions
... the dwarf-sized lake-endemic Fontane cisco (C. fontanae). The two species are reproductively isolated by differential breeding times and it has been suggested that the species pair may have evolved in sympatry since the last glaciation. It was assumed that coexistence of the two was facilitated by s ...
... the dwarf-sized lake-endemic Fontane cisco (C. fontanae). The two species are reproductively isolated by differential breeding times and it has been suggested that the species pair may have evolved in sympatry since the last glaciation. It was assumed that coexistence of the two was facilitated by s ...
Pages 239–248682.15 KB - Department of Parks and Wildlife
... in proportion to their abundance. If any of these species was being ingested disproportionally to its field abundance, this may suggest that foxes were exhibiting a preference for this species. The diet of foxes was examined in relation to theoretical predator–prey models to obtain an explanation of ...
... in proportion to their abundance. If any of these species was being ingested disproportionally to its field abundance, this may suggest that foxes were exhibiting a preference for this species. The diet of foxes was examined in relation to theoretical predator–prey models to obtain an explanation of ...
Appendix A2 Ecology - Environment Agency
... appeared to survive, growing upward through the sediments. Burial by a sudden influx of sediment (often sand), particularly during the growing season, can kill plants in the landward parts of marshes where the species are more sensitive to burial. On the whole, however, high accretion rates per se a ...
... appeared to survive, growing upward through the sediments. Burial by a sudden influx of sediment (often sand), particularly during the growing season, can kill plants in the landward parts of marshes where the species are more sensitive to burial. On the whole, however, high accretion rates per se a ...
Ch 54 Notes - Dublin City Schools
... • Retreating glaciers provide a valuable fieldresearch opportunity for observing succession • Succession on the moraines in Glacier Bay, Alaska, follows a predictable pattern of change in vegetation and soil characteristics ...
... • Retreating glaciers provide a valuable fieldresearch opportunity for observing succession • Succession on the moraines in Glacier Bay, Alaska, follows a predictable pattern of change in vegetation and soil characteristics ...
implications of invasion by juniperus virginiana on small mammals
... was ! st evaluated in the 3 plots by using detrended correspondence analysis (DCA) with CANOCO software (ter Braak and Smilauer 1988). DCA is an indirect gradient analysis technique used to identify factors influencing characteristics of communities that vary along compositional gradients (Peet et a ...
... was ! st evaluated in the 3 plots by using detrended correspondence analysis (DCA) with CANOCO software (ter Braak and Smilauer 1988). DCA is an indirect gradient analysis technique used to identify factors influencing characteristics of communities that vary along compositional gradients (Peet et a ...
Grain sowing aimed at wild rabbit Oryctolagus cuniculus L
... cross-passes with a deep plough. Here, cereal sowing acts to reduce recolonization by thickets (Muslera & Ratera, 1993) and increases the availability of high-quality food (fodder during winter and spring, and grain in summer) for rabbits, big game, and livestock. Cereals (barley and oat seed) were ...
... cross-passes with a deep plough. Here, cereal sowing acts to reduce recolonization by thickets (Muslera & Ratera, 1993) and increases the availability of high-quality food (fodder during winter and spring, and grain in summer) for rabbits, big game, and livestock. Cereals (barley and oat seed) were ...
Ecology, Second Edition
... Patterns of Population Growth 223 CONCEPT 10.2 Delayed density dependence can cause populations to fluctuate in size. 226 Delayed Density Dependence 226 ...
... Patterns of Population Growth 223 CONCEPT 10.2 Delayed density dependence can cause populations to fluctuate in size. 226 Delayed Density Dependence 226 ...
Wolf-Cougar Co-occurrence in the Central Canadian Rocky Mountains
... time with the reestablishment of wolves, and therefore their prey selection also changed. Kortello et al. (2007) had similar results from a wolf-cougar interaction study in Banff National Park, Alberta; diet overlap between the species diverged with an increase in wolf population and expansion of r ...
... time with the reestablishment of wolves, and therefore their prey selection also changed. Kortello et al. (2007) had similar results from a wolf-cougar interaction study in Banff National Park, Alberta; diet overlap between the species diverged with an increase in wolf population and expansion of r ...
Universidade Federal de Uberlândia Instituto de Biologia Programa
... that, in the case of C. stellatus, fundamental and realized niche are not similar, since the realized niche is compressed due to interspecific competition (Connell, 1961, 1983). Connell experiments demonstrated that competitive exclusion occurs in nature, and this may explain the distinction between ...
... that, in the case of C. stellatus, fundamental and realized niche are not similar, since the realized niche is compressed due to interspecific competition (Connell, 1961, 1983). Connell experiments demonstrated that competitive exclusion occurs in nature, and this may explain the distinction between ...
Ecological Resilience, Biodiversity, and Scale
... were greater between 9 and 15 species than between 15 and 31 species, providing support for the hypothesis that an increase in species richness increases ecological redundancy. Water and nutrient retention did not vary with species richness. Frost and coworkers (1995) demonstrated that ecological fu ...
... were greater between 9 and 15 species than between 15 and 31 species, providing support for the hypothesis that an increase in species richness increases ecological redundancy. Water and nutrient retention did not vary with species richness. Frost and coworkers (1995) demonstrated that ecological fu ...