Energy, Density, and Constraints to Species Richness: Ant
... plant respiration (gC m22 yr21). As the habitat’s NPP increases, so does its ability to support more individuals of that taxon—the taxon’s density (D). Second, as D increases, more species of that taxon can exist at a given population size (conversely, as the number of individuals decreases, populat ...
... plant respiration (gC m22 yr21). As the habitat’s NPP increases, so does its ability to support more individuals of that taxon—the taxon’s density (D). Second, as D increases, more species of that taxon can exist at a given population size (conversely, as the number of individuals decreases, populat ...
Re-assessing current extinction rates
... species area estimates based on logging and forest loss, suggested that 17,500 species are being lost each year based on a total of 5 million species of organisms. Many of these early authors still consider that such extinction rate estimates are valid (e.g. Raven and McNeely 1998; Pimm and Raven 20 ...
... species area estimates based on logging and forest loss, suggested that 17,500 species are being lost each year based on a total of 5 million species of organisms. Many of these early authors still consider that such extinction rate estimates are valid (e.g. Raven and McNeely 1998; Pimm and Raven 20 ...
Community Maturity, Species Saturation and the Variant Diversity
... increased with eight sown species and then levelled off or decreased with 16 sown species (Fig. 1). The constant model also received considerable weight for NP in 2003, but was second to the quadratic model. Model-averaged predictions indicated that productivity may have increased and then decreased ...
... increased with eight sown species and then levelled off or decreased with 16 sown species (Fig. 1). The constant model also received considerable weight for NP in 2003, but was second to the quadratic model. Model-averaged predictions indicated that productivity may have increased and then decreased ...
ppt
... “A null model is a pattern-generating model that is based on randomization of ecological data or random sampling from a known or imagined distribution. The null model is designed with respect to some ecological or evolutionary process of interest. Certain elements of the data are held constant, and ...
... “A null model is a pattern-generating model that is based on randomization of ecological data or random sampling from a known or imagined distribution. The null model is designed with respect to some ecological or evolutionary process of interest. Certain elements of the data are held constant, and ...
biophysical overview of the laurentian channel
... The bathymetry of the area of interest varies from 100 to 500 meters depth. The Northeast side of the area is the shallowest part, being delimited by the edge of the Burgeo and St. Pierre Banks. The depth at those edges varies from 200m at the Burgeo Bank to 100m along the St ...
... The bathymetry of the area of interest varies from 100 to 500 meters depth. The Northeast side of the area is the shallowest part, being delimited by the edge of the Burgeo and St. Pierre Banks. The depth at those edges varies from 200m at the Burgeo Bank to 100m along the St ...
Intraspecific genetic variation and species coexistence in plant
... The ecological success of plant species and the means by which they coexist in a community can be seen as ultimately determined by four main processes: speciation, migration, demographic stochasticity and ecological differences between species [7]. Various coexistence paradigms have been proposed th ...
... The ecological success of plant species and the means by which they coexist in a community can be seen as ultimately determined by four main processes: speciation, migration, demographic stochasticity and ecological differences between species [7]. Various coexistence paradigms have been proposed th ...
Facilitation among plants as an insurance policy for diversity in
... Hence, alpine habitats dominated by cushion plants are ideal systems to assess the community-level effects of facilitative interactions. Here, a search was conducted using ISI Web of Knowledge data base for articles associated with cushion plants’ facilitation in alpine habitats, and using the inform ...
... Hence, alpine habitats dominated by cushion plants are ideal systems to assess the community-level effects of facilitative interactions. Here, a search was conducted using ISI Web of Knowledge data base for articles associated with cushion plants’ facilitation in alpine habitats, and using the inform ...
Some historic landmarks
... “A null model is a pattern-generating model that is based on randomization of ecological data or random sampling from a known or imagined distribution. The null model is designed with respect to some ecological or evolutionary process of interest. Certain elements of the data are held constant, and ...
... “A null model is a pattern-generating model that is based on randomization of ecological data or random sampling from a known or imagined distribution. The null model is designed with respect to some ecological or evolutionary process of interest. Certain elements of the data are held constant, and ...
Global Ecology
... 2. Organisms making up the community are somehow integrated and may interact as a unit. 3. Communities are not constructed only of plants. 4. Some communities are mostly animals (e.g. fish and invertebrates that comprise coral-reef communities). 5. Most communities consist of a mixture of plants, an ...
... 2. Organisms making up the community are somehow integrated and may interact as a unit. 3. Communities are not constructed only of plants. 4. Some communities are mostly animals (e.g. fish and invertebrates that comprise coral-reef communities). 5. Most communities consist of a mixture of plants, an ...
Effects of wave exposure on
... environmental extremes or associated with the competitive dominants may be equally important in determining community richness. Tolerance to disturbances defines which species become dominant. Habitat complexity, competition, and mutualism secondarily influence the composition of this community. Sel ...
... environmental extremes or associated with the competitive dominants may be equally important in determining community richness. Tolerance to disturbances defines which species become dominant. Habitat complexity, competition, and mutualism secondarily influence the composition of this community. Sel ...
Increasing deterministic control of primary succession on Mount St
... from 0.597 to 0.774, while only 2008 had an RDA-2 correlation over 0.650 (Table 3). Explained variation increased consistently as useful explanatory variables shifted from spatial to local factors (Table 4). The inter-set correlations of RDA-1 with elevation (and its correlate, Northing), soil textu ...
... from 0.597 to 0.774, while only 2008 had an RDA-2 correlation over 0.650 (Table 3). Explained variation increased consistently as useful explanatory variables shifted from spatial to local factors (Table 4). The inter-set correlations of RDA-1 with elevation (and its correlate, Northing), soil textu ...
Varanus acanthurus. Photo by Jeff Lemm.
... have survived many extreme climate changes. The planet has undergone numerous ice ages as well as some extremely warm episodes. However, the exploding human population combined with increased energy use per person has resulted in ongoing increases in global temperatures. Will lizards be able to surv ...
... have survived many extreme climate changes. The planet has undergone numerous ice ages as well as some extremely warm episodes. However, the exploding human population combined with increased energy use per person has resulted in ongoing increases in global temperatures. Will lizards be able to surv ...
Murray Hardyhead Primefact - NSW Department of Primary Industries
... several other hardyhead species, including the Darling River Hardyhead, Lake Eyre Hardyhead and Unspecked Hardyhead (with which it can cooccur in the Southern Murray-Darling Basin). The scales of Murray Hardyhead are circular with pigment mostly around the edge, and irregularly arranged on the shoul ...
... several other hardyhead species, including the Darling River Hardyhead, Lake Eyre Hardyhead and Unspecked Hardyhead (with which it can cooccur in the Southern Murray-Darling Basin). The scales of Murray Hardyhead are circular with pigment mostly around the edge, and irregularly arranged on the shoul ...
mathe.chp:Corel VENTURA
... with previous observations (Spence et al. 1996), which demonstrated that forest specialists also maintain populations in the forest edge. The discussed dispersal processes and the edge associated species (Table 2) contribute to the increased diversity of carabids in the forest edge. Overall, edge ef ...
... with previous observations (Spence et al. 1996), which demonstrated that forest specialists also maintain populations in the forest edge. The discussed dispersal processes and the edge associated species (Table 2) contribute to the increased diversity of carabids in the forest edge. Overall, edge ef ...
Nontoxic toxins: the energetics of coevolution
... attacking a predator, and armour. Since a non-tribute defence attempts to give 110 energy return to the predator, its effectiveness (at a given level ofcost) is likely to be inversely related to the relative productivity of the prey species with respect t o other potential prey species: not all prey ...
... attacking a predator, and armour. Since a non-tribute defence attempts to give 110 energy return to the predator, its effectiveness (at a given level ofcost) is likely to be inversely related to the relative productivity of the prey species with respect t o other potential prey species: not all prey ...
The ecology of infectious disease: Effects of host diversity and
... I. scapularis sampled from parts of the northeastern and midAtlantic regions of the U.S. It is possible that our estimates of NIP and reservoir competence therefore may be slightly inflated if this novel Borrelia exists locally. However, an analysis of the ospA gene, specific to B. burgdorferi, from ...
... I. scapularis sampled from parts of the northeastern and midAtlantic regions of the U.S. It is possible that our estimates of NIP and reservoir competence therefore may be slightly inflated if this novel Borrelia exists locally. However, an analysis of the ospA gene, specific to B. burgdorferi, from ...
Reinventing mutualism between humans and wild fauna
... culturalservices(roleofbirdsinartandreligionorbirdwatchingtourism)(Whelan etal .2008). The ecosystem services provided by birds mainly occur beyond urban boundaries, but can occasionally take place within highly anthropized (human-altered) environments. Urban areas represent particular ecosystems th ...
... culturalservices(roleofbirdsinartandreligionorbirdwatchingtourism)(Whelan etal .2008). The ecosystem services provided by birds mainly occur beyond urban boundaries, but can occasionally take place within highly anthropized (human-altered) environments. Urban areas represent particular ecosystems th ...
maritime chaparral
... Climate scenarios predict an increase in drought stress regardless of precipitation changes, which is particularly problematic for “non-sprouting” species such as the rare species considered below, as they are relatively shallow rooting. Plant Diseases: Manzanita species in the One Tam area of focus ...
... Climate scenarios predict an increase in drought stress regardless of precipitation changes, which is particularly problematic for “non-sprouting” species such as the rare species considered below, as they are relatively shallow rooting. Plant Diseases: Manzanita species in the One Tam area of focus ...
Western Society of Weed Science, Albuquerque, New Mexico
... predictive insight into impact variability, eighteen covariates were examined in relation to community response to experimental treatments. Four treatments: control, manual removal, ground disturbance and herbicide application, were applied to replicated paired plots across four natural plant commun ...
... predictive insight into impact variability, eighteen covariates were examined in relation to community response to experimental treatments. Four treatments: control, manual removal, ground disturbance and herbicide application, were applied to replicated paired plots across four natural plant commun ...
File - Mrs. Schneider`s Science home page
... You will need it during the lessons and break out rooms. ...
... You will need it during the lessons and break out rooms. ...
Raport privind informa*iile colectate pentru speciile de
... Officially, because of the great number of conflicts with the farmers (livestock damages) and the hunter (predator of game species), a certain number of wolves are removed each year using Habitat Directive derogations. In theory the hunting is only allowed for certain wolves under specific condition ...
... Officially, because of the great number of conflicts with the farmers (livestock damages) and the hunter (predator of game species), a certain number of wolves are removed each year using Habitat Directive derogations. In theory the hunting is only allowed for certain wolves under specific condition ...
Global climate change, range changes and potential implications for
... the ranges of these species will be substantially altered as a result of climate change. Cooler water-limited (CWL) species: CWL species occur from the ice-edges of polar waters to waters of a specific temperature range (see Fig. 1A for a theoretical example). As a result, it is likely that the rang ...
... the ranges of these species will be substantially altered as a result of climate change. Cooler water-limited (CWL) species: CWL species occur from the ice-edges of polar waters to waters of a specific temperature range (see Fig. 1A for a theoretical example). As a result, it is likely that the rang ...
Evolution, Biological Communities, and Species Interactions
... replication of DNA strands during reproduction are the main causes of genetic mutations. Sometimes a single mutation has a large effect, but evolutionary change is mostly brought about by many mutations accumulating over time. Only mutations in reproductive cells (gametes) matter; body cell changes— ...
... replication of DNA strands during reproduction are the main causes of genetic mutations. Sometimes a single mutation has a large effect, but evolutionary change is mostly brought about by many mutations accumulating over time. Only mutations in reproductive cells (gametes) matter; body cell changes— ...
Wildlife dynamics in the changing New England landscape
... of wildlife… We do not yet appreciate how much historical evidence can be dug up, or how important it can be in the appraisal of contemporary ecology.Õ Aldo Leopold (1933). ÔThe abundance of wildlife does not result from jurisdiction, sportsmanÕs meetings or bureaucratic dictates; it results from wh ...
... of wildlife… We do not yet appreciate how much historical evidence can be dug up, or how important it can be in the appraisal of contemporary ecology.Õ Aldo Leopold (1933). ÔThe abundance of wildlife does not result from jurisdiction, sportsmanÕs meetings or bureaucratic dictates; it results from wh ...
DODSON, STANLEY Predicting crustacean zooplankton species
... Methods of selecting lakes and defining species lists are similar to those of Dodson (199 1). Specieslists for each lake include all pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justific ...
... Methods of selecting lakes and defining species lists are similar to those of Dodson (199 1). Specieslists for each lake include all pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justific ...