Neutral theory in community ecology and the hypothesis of
... use of shared resources for two species to coexist or, in other words, there should be some limiting similarity between the niches of coexisting species (Hutchinson 1959; MacArthur & Levins 1967; MacArthur 1970). The principle also implied that competitive exclusion should be a commonplace observati ...
... use of shared resources for two species to coexist or, in other words, there should be some limiting similarity between the niches of coexisting species (Hutchinson 1959; MacArthur & Levins 1967; MacArthur 1970). The principle also implied that competitive exclusion should be a commonplace observati ...
REVIEW The importance of evolutionary history in studies of plant
... Studies that compare physiology, anatomy, and ecology across species have offered some of the best insight into adaptation and evolutionary constraints in plants. As a result, the comparative approach has become increasingly used in studies of plant physiological ecology. The high species diversity ...
... Studies that compare physiology, anatomy, and ecology across species have offered some of the best insight into adaptation and evolutionary constraints in plants. As a result, the comparative approach has become increasingly used in studies of plant physiological ecology. The high species diversity ...
A pragmatic approach for selecting evo
... species and hope this will be used as a starting point for an in-depth analysis with input from morphologists, paleontologists, animal breeders, physiologists, developmental biologists and molecular phylogeneticists. ...
... species and hope this will be used as a starting point for an in-depth analysis with input from morphologists, paleontologists, animal breeders, physiologists, developmental biologists and molecular phylogeneticists. ...
The Potential Conservation Value of NonNative Species
... Finally, we disagree with their statement that “introductions have much more frequently caused loss of biological diversity, ecosystem functions, and ecosystem services . . . ” They base these claims on the Millennium Ecosystem Assessment (2005), but much data has become available over the last deca ...
... Finally, we disagree with their statement that “introductions have much more frequently caused loss of biological diversity, ecosystem functions, and ecosystem services . . . ” They base these claims on the Millennium Ecosystem Assessment (2005), but much data has become available over the last deca ...
diversity, utilization of resources, and adaptive radiation in shallow
... to genera having more than three sympatric species (Fig. 2). The same phcnomenon characterizes other invertebrate taxa. In the coral family Acroporidae, for example, 54 species of Acroporn and 30 of Montipora occur in the Marshall Islands (Wells 1954). In tropical Indo-West Pacific Crustacea, “there ...
... to genera having more than three sympatric species (Fig. 2). The same phcnomenon characterizes other invertebrate taxa. In the coral family Acroporidae, for example, 54 species of Acroporn and 30 of Montipora occur in the Marshall Islands (Wells 1954). In tropical Indo-West Pacific Crustacea, “there ...
dodo and calvaria
... Abstract In tropical forests, most trees have fleshy fruits adapted to animal dispersal; and the important role that birds especially play in their dispersal is well documented. Few studies, however, have so far addressed the question of whether declining bird species richness, whatever the cause, l ...
... Abstract In tropical forests, most trees have fleshy fruits adapted to animal dispersal; and the important role that birds especially play in their dispersal is well documented. Few studies, however, have so far addressed the question of whether declining bird species richness, whatever the cause, l ...
APPENDIX D: Specialist reports - Sazi Environmental Consulting
... encountered within the habitat type in order to identify species and communities. This was continued until few to no new species were encountered. Any additional information on any other feature thought to have ecological significance within the site, such as fauna or evidence of fauna, soil type, a ...
... encountered within the habitat type in order to identify species and communities. This was continued until few to no new species were encountered. Any additional information on any other feature thought to have ecological significance within the site, such as fauna or evidence of fauna, soil type, a ...
Niche diversification of sessile organisms at Hopkins Marine Station
... literature to put the questions this study addresses into the broader context. You clearly understand the concepts, but work on simplifying your sentences so that others can understand them too. Try reading sentences out loud to yourself and try flipping them around to avoid the need for many commas ...
... literature to put the questions this study addresses into the broader context. You clearly understand the concepts, but work on simplifying your sentences so that others can understand them too. Try reading sentences out loud to yourself and try flipping them around to avoid the need for many commas ...
Diet and seasonal dispersal of extralimital giraffe at Sanbona
... ossicones, with the males often thicker, knobbed and hairless at the ends. Giraffe are gregarious, associating in nonterritorial, loose, open herds with no fixed social hierarchy. Individuals rarely stay together for prolonged periods of time, with the exception of females with calves (Ciofolo & Le ...
... ossicones, with the males often thicker, knobbed and hairless at the ends. Giraffe are gregarious, associating in nonterritorial, loose, open herds with no fixed social hierarchy. Individuals rarely stay together for prolonged periods of time, with the exception of females with calves (Ciofolo & Le ...
Independent species in independent niches behave neutrally: a
... respective niches and thereby constrain one another’s abundances. The model of Haegeman and Etienne (2011) does shed light, mathematically, on why we obtain our asymptotic result in the limit of high diversity. But the absence of the zero-sum constraint makes their model less biologically realistic ...
... respective niches and thereby constrain one another’s abundances. The model of Haegeman and Etienne (2011) does shed light, mathematically, on why we obtain our asymptotic result in the limit of high diversity. But the absence of the zero-sum constraint makes their model less biologically realistic ...
as a PDF
... 25 cm×25 cm×30 cm were excavated and divided into three layers of 10 cm from which all organisms were recovered by hand sorting. Specimens were identified at different levels, such as families, morphospecies or species when possible. 2.3. Data analysis The diversity was described by means of the Sha ...
... 25 cm×25 cm×30 cm were excavated and divided into three layers of 10 cm from which all organisms were recovered by hand sorting. Specimens were identified at different levels, such as families, morphospecies or species when possible. 2.3. Data analysis The diversity was described by means of the Sha ...
Loxodonta africana, African Elephant
... lowest around the turn of the 20th century, and to have been increasing steadily ever since. The magnitude of the decline in Eastern Africa has in all likelihood been offset by the magnitude of the increase in Southern Africa. In West Africa, major declines probably occurred well before the turn of ...
... lowest around the turn of the 20th century, and to have been increasing steadily ever since. The magnitude of the decline in Eastern Africa has in all likelihood been offset by the magnitude of the increase in Southern Africa. In West Africa, major declines probably occurred well before the turn of ...
Diversity and distribution of small mammals in the South American
... Latitudinal and elevational richness gradient for both groups (total and endemic species) of Andean small mammals revealed similar patterns.The bimodal richness pattern found along the latitudinal extent of the Dry Andes, with its major and smaller peaks (18°S; 34–35°S), suggests that species turnov ...
... Latitudinal and elevational richness gradient for both groups (total and endemic species) of Andean small mammals revealed similar patterns.The bimodal richness pattern found along the latitudinal extent of the Dry Andes, with its major and smaller peaks (18°S; 34–35°S), suggests that species turnov ...
Soil detritivore macro-invertebrate assemblages throughout a
... The recent awareness of a global biodiversity crisis has underscored the urgent necessity of maintaining ecosystem integrity and functioning [36]. In forest ecosystems the conservation of biological diversity has been identified as a major goal of sustainable silvicultural management [39]. Intensive ...
... The recent awareness of a global biodiversity crisis has underscored the urgent necessity of maintaining ecosystem integrity and functioning [36]. In forest ecosystems the conservation of biological diversity has been identified as a major goal of sustainable silvicultural management [39]. Intensive ...
Giant Burrowing Frog
... There appear to be two main distribution patterns, which have been loosely termed the northern and southern populations. The northern population is known to occur within an area bounded by Mt Coricudgy and Kings Cross in Wollemi National Park to the Jervis Bay district and west to Mt Victoria. This ...
... There appear to be two main distribution patterns, which have been loosely termed the northern and southern populations. The northern population is known to occur within an area bounded by Mt Coricudgy and Kings Cross in Wollemi National Park to the Jervis Bay district and west to Mt Victoria. This ...
Full Text - Cedar Creek Ecosystem Science Reserve
... numbers of randomly chosen species. All three models predict that, on average, productivity increases asymptotically with the original biodiversity of a community. The two models that address plant nutrient competition also predict that ecosystem nutrient retention increases with biodiversity and th ...
... numbers of randomly chosen species. All three models predict that, on average, productivity increases asymptotically with the original biodiversity of a community. The two models that address plant nutrient competition also predict that ecosystem nutrient retention increases with biodiversity and th ...
A Pilot Wintering Waterbird Indicator for the European Union
... Executive Summary Waterbirds represent an important cultural, recreational and economic asset. One third of all bird species in the European Union are waterbirds, but they make up two thirds of the huntable species listed on Annex II of the Birds Directive. For many species, the majority of their p ...
... Executive Summary Waterbirds represent an important cultural, recreational and economic asset. One third of all bird species in the European Union are waterbirds, but they make up two thirds of the huntable species listed on Annex II of the Birds Directive. For many species, the majority of their p ...
The contribution of species richness and composition to bacterial
... is of most interest in studies such as this. Each species is equally represented at each level of species richness, therefore the Log(R) term is the impact of interactions among species on bacterial respiration. This effect is clearly significant and the slope changes with time (see: Figure 3; Table ...
... is of most interest in studies such as this. Each species is equally represented at each level of species richness, therefore the Log(R) term is the impact of interactions among species on bacterial respiration. This effect is clearly significant and the slope changes with time (see: Figure 3; Table ...
Shepherd`s Tree - Department of Agriculture
... van der Merwe, pers. comm.). In Namibia, farmers sometimes cut partially through the tree trunk, so that it can be bent such that the leaves are within reach of browsing livestock (Coates Palgrave 1983). Occasionally, these trees are also destroyed while land is being cleared for agriculture (Izak v ...
... van der Merwe, pers. comm.). In Namibia, farmers sometimes cut partially through the tree trunk, so that it can be bent such that the leaves are within reach of browsing livestock (Coates Palgrave 1983). Occasionally, these trees are also destroyed while land is being cleared for agriculture (Izak v ...
Quiz thinking - University of Western Cape
... the price the biosphere is going to exact from humanity because of the extinctions humans have caused. Which of the following gasses must be absent for fossilization to occur? oxygen hydrogen nitrogen carbon dioxide nitrous oxide For Conservation Biology Chapter 7 A group of interacting individuals ...
... the price the biosphere is going to exact from humanity because of the extinctions humans have caused. Which of the following gasses must be absent for fossilization to occur? oxygen hydrogen nitrogen carbon dioxide nitrous oxide For Conservation Biology Chapter 7 A group of interacting individuals ...
First record of Grandidierella japonica Stephensen, 1938
... genus Grandidierella can be easily confused with other aorid genera, especially Microdeutopus. Moreover, neither the species nor the genus was described in the taxonomic works most commonly used for amphipod identification in French Atlantic waters (Chevreux and Fage 1925; Lincoln 1979). As already ...
... genus Grandidierella can be easily confused with other aorid genera, especially Microdeutopus. Moreover, neither the species nor the genus was described in the taxonomic works most commonly used for amphipod identification in French Atlantic waters (Chevreux and Fage 1925; Lincoln 1979). As already ...
Predicting species diversity in tropical forests
... 1 m2 and 50 ha. Hence, tropical forests are conclusively not self-similar at these scales. The empirical form of the spatial persistence curve, and its departure from self-similarity, may result in part from aggregation of conspecifics—a possibility that we explore in detail elsewhere (29). A Differ ...
... 1 m2 and 50 ha. Hence, tropical forests are conclusively not self-similar at these scales. The empirical form of the spatial persistence curve, and its departure from self-similarity, may result in part from aggregation of conspecifics—a possibility that we explore in detail elsewhere (29). A Differ ...
First Them, Then Us
... extinction via overexploitation is the passenger pigeon. The passenger pigeon was one of the most abundant birds before humans began to hunt it, which, in conjunction with habitat fragmentation, led to its extinction.28 Introducing non-native species also poses a threat to biodiversity as the exotic ...
... extinction via overexploitation is the passenger pigeon. The passenger pigeon was one of the most abundant birds before humans began to hunt it, which, in conjunction with habitat fragmentation, led to its extinction.28 Introducing non-native species also poses a threat to biodiversity as the exotic ...
PPT Slide - Tennessee State University
... beech-maple forest perpetuates itself, and its general appearance changes little despite constant replacement of individuals within the ...
... beech-maple forest perpetuates itself, and its general appearance changes little despite constant replacement of individuals within the ...
Biodiversity: Concepts, Patterns, and Measurement
... of very well-known groups in very well-known places (for which we already have good estimates of total richness anyway), species richness must generally be estimated based on samples. First of all, even for groups as well known as birds or flowering plants, not all species that are actually present ...
... of very well-known groups in very well-known places (for which we already have good estimates of total richness anyway), species richness must generally be estimated based on samples. First of all, even for groups as well known as birds or flowering plants, not all species that are actually present ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.