AG. 518 BOTANY\RANGE SCIENCE
... ecosystem and the population size of each of these species to be the same from year to year or not Define inertia and resilience Explain environmental resistance and the role it plays in population balance and ecosystem balance Define the term species diversity and give evidence that species diversi ...
... ecosystem and the population size of each of these species to be the same from year to year or not Define inertia and resilience Explain environmental resistance and the role it plays in population balance and ecosystem balance Define the term species diversity and give evidence that species diversi ...
paper-ii (practical): cartographic techniques in geography
... 1.1 Construction of Geological Section of Horizontal, Uniclinal, Folded and Faulted Structures Along with Igneous Intrusions and Line of Unconformity 1.2 Succession and Relation with Rock Groups 1.3 Topography and its Relation with Underlying Structures 1.4 Interpretation of Geological History 2.0 A ...
... 1.1 Construction of Geological Section of Horizontal, Uniclinal, Folded and Faulted Structures Along with Igneous Intrusions and Line of Unconformity 1.2 Succession and Relation with Rock Groups 1.3 Topography and its Relation with Underlying Structures 1.4 Interpretation of Geological History 2.0 A ...
Report - Emodnet Biology
... Identifiers (URI’s). The most important consideration with the namespace and URI’s is that they are persistent and do not change, this would be possible using a redirection service such as www.purl.org. The published namespace would, for example, remain as http://purl.org/mst/terms whilst the actual ...
... Identifiers (URI’s). The most important consideration with the namespace and URI’s is that they are persistent and do not change, this would be possible using a redirection service such as www.purl.org. The published namespace would, for example, remain as http://purl.org/mst/terms whilst the actual ...
Effect of high temperatures on cone opening and on the release and
... pinaster and P. radiata. Spontaneous dispersal of mature P. pinaster seeds in Galicia (NW Spain) coincides with the end of spring and lasts throughout the summer [32]. P. pinaster is a species which does not need excessively high temperatures for most of its cones to open their scales or bracts and ...
... pinaster and P. radiata. Spontaneous dispersal of mature P. pinaster seeds in Galicia (NW Spain) coincides with the end of spring and lasts throughout the summer [32]. P. pinaster is a species which does not need excessively high temperatures for most of its cones to open their scales or bracts and ...
Succession an Unfinished Revolution
... return to the climax or stable stage, relatively long times between disturbances were assumed. This was usually considered to be thousands of years. If disturbances became too frequent then the whole idea of a stable final stage where certain assemblages of species stay relatively constant was diffi ...
... return to the climax or stable stage, relatively long times between disturbances were assumed. This was usually considered to be thousands of years. If disturbances became too frequent then the whole idea of a stable final stage where certain assemblages of species stay relatively constant was diffi ...
G. Evelyn Hutchinson
... Hutchinson, G.E. 1918. A swimming grasshopper. - Entomological Record and Journal of Variation. 30:138. Hutchinson, G.E. 1928. The branchial gland of the Cephalopoda- a possible endocrine organ. Nature. 121:674-675. Hutchinson, G.E., G.E. Pickford, and J.F.M. Schuurman. 1932. A contribution to the ...
... Hutchinson, G.E. 1918. A swimming grasshopper. - Entomological Record and Journal of Variation. 30:138. Hutchinson, G.E. 1928. The branchial gland of the Cephalopoda- a possible endocrine organ. Nature. 121:674-675. Hutchinson, G.E., G.E. Pickford, and J.F.M. Schuurman. 1932. A contribution to the ...
Ecological Resilience, Biodiversity, and Scale
... We emphasize the differences between these models before discussing their similarities. We then present our model of ‘‘cross-scale resilience,’’ which incorporates scale into an expanded model of the relationship between diversity and ecological function. ...
... We emphasize the differences between these models before discussing their similarities. We then present our model of ‘‘cross-scale resilience,’’ which incorporates scale into an expanded model of the relationship between diversity and ecological function. ...
Choosing appropriate temporal and spatial scales for ecological
... upon the assumption that the unit or climax formation is an organic entity. As an organism the formation arises, grows, matures, and dies. . . . Furthermore, each climax formation is able to reproduce itself, repeating with essential fidelity the stages of its development. The life history of a form ...
... upon the assumption that the unit or climax formation is an organic entity. As an organism the formation arises, grows, matures, and dies. . . . Furthermore, each climax formation is able to reproduce itself, repeating with essential fidelity the stages of its development. The life history of a form ...
Limiting similarity, species packing, and the shape of
... Kurtosis is a common measure of the peakedness of a distribution. Applied to competition kernel shapes, it can give useful guidance about clustering tendencies. Square or box-like kernels (Leimar et al., 2008; Pigolotti et al., 2010) are typically platykurtic and tend to promote clustering (Fig. 3a) ...
... Kurtosis is a common measure of the peakedness of a distribution. Applied to competition kernel shapes, it can give useful guidance about clustering tendencies. Square or box-like kernels (Leimar et al., 2008; Pigolotti et al., 2010) are typically platykurtic and tend to promote clustering (Fig. 3a) ...
Insect Ecology
... •It is the duration of bright (photophase) and dark (skotophase) periods within one day •Mainly in the temperate zone it decisively determines the development of many species (see later dormancies) •It can cause morphological changes e.g.: in case of 16 hours photophase or even more Euscelis plebeju ...
... •It is the duration of bright (photophase) and dark (skotophase) periods within one day •Mainly in the temperate zone it decisively determines the development of many species (see later dormancies) •It can cause morphological changes e.g.: in case of 16 hours photophase or even more Euscelis plebeju ...
Q1 - FCCSC
... Explain how the sun and the water cycle create the different biomes. Compare and Contrast the different biomes. Describe specific food chains and food webs in a particular biome. ...
... Explain how the sun and the water cycle create the different biomes. Compare and Contrast the different biomes. Describe specific food chains and food webs in a particular biome. ...
Tidal power and the aquatic environment of La Rance
... isolation of the estuary, during the construction phase, was particularly damaging to the environment. Gradually, after the scheme was put into service, an increasingly diverse flora and fauna became established. The patterns of distribution of this flora and fauna, their groupings into ecological u ...
... isolation of the estuary, during the construction phase, was particularly damaging to the environment. Gradually, after the scheme was put into service, an increasingly diverse flora and fauna became established. The patterns of distribution of this flora and fauna, their groupings into ecological u ...
Document
... more than species identified in this research. Previous studies which are mostly done on a monthly basis show changes in the species of algae population and their fluctuations throughout the year. Therefore, some species may disappear during the year and their biomass has a lot of changes over the y ...
... more than species identified in this research. Previous studies which are mostly done on a monthly basis show changes in the species of algae population and their fluctuations throughout the year. Therefore, some species may disappear during the year and their biomass has a lot of changes over the y ...
Provided for non-commercial research and educational use only.
... mixing counteracts the emergence of patches. In a well-mixed environment, all organisms potentially interact with each other, much in contrast to terrestrial systems, where many species are either ‘sessile’ (plants) or have very limited range sizes (most small invertebrates except for flying insects ...
... mixing counteracts the emergence of patches. In a well-mixed environment, all organisms potentially interact with each other, much in contrast to terrestrial systems, where many species are either ‘sessile’ (plants) or have very limited range sizes (most small invertebrates except for flying insects ...
Genetic Biodiversity Recommendations of the European Platform for
... their relationships, at every level of organisation from genome to ecosystem Biogenic: (adj) produced or caused by biological processes Biogeography: (n) study of the distribution of organisms and the processes that lead to these distributions Biomarker: (n) tracer used to detect, distinguish or mon ...
... their relationships, at every level of organisation from genome to ecosystem Biogenic: (adj) produced or caused by biological processes Biogeography: (n) study of the distribution of organisms and the processes that lead to these distributions Biomarker: (n) tracer used to detect, distinguish or mon ...
Continental Drift:
... Wegener to his future wife in December 1910. "This is an idea I'll have to pursue." The following fall Wegener came across scientific papers promoting the prevailing theory that Africa and South America had once been connected by a continent-size land bridge that had since sunk into the sea. They ci ...
... Wegener to his future wife in December 1910. "This is an idea I'll have to pursue." The following fall Wegener came across scientific papers promoting the prevailing theory that Africa and South America had once been connected by a continent-size land bridge that had since sunk into the sea. They ci ...
Once a Batesian mimic, not always a Batesian mimic: mimic reverts
... L. arthemis forms, the model and the host plants We used published geographical information of North American butterfly and host plant county records to determine whether the transition from mimetic to cryptic L. arthemis form was correlated with the absence of its Batesian model, B. philenor, or so ...
... L. arthemis forms, the model and the host plants We used published geographical information of North American butterfly and host plant county records to determine whether the transition from mimetic to cryptic L. arthemis form was correlated with the absence of its Batesian model, B. philenor, or so ...
The ecology of shell shape difference in chirally - UvA-DARE
... to show subtle differences between both coiling morphs, and it is known that in snails in general, shell shape is under environmental selection, thus creating the possibility that micro-niche use of both coiling morphs differs. In this paper, we first confirm that hatchlings also differ in shell sha ...
... to show subtle differences between both coiling morphs, and it is known that in snails in general, shell shape is under environmental selection, thus creating the possibility that micro-niche use of both coiling morphs differs. In this paper, we first confirm that hatchlings also differ in shell sha ...
Experimental evidence for an ideal free distribution in a breeding
... of two basins with contrasting productivity was consistent with an IFD. The presence or absence of habitatspecific variation in per capita productivity can have very different consequences for population dynamics, not to mention conservation (Morris 2003). For example, given similar population size a ...
... of two basins with contrasting productivity was consistent with an IFD. The presence or absence of habitatspecific variation in per capita productivity can have very different consequences for population dynamics, not to mention conservation (Morris 2003). For example, given similar population size a ...
DEFORESTATION PATTERNS AND HUMMINGBIRD DIvERSITy IN
... high tolerance towards a deforested matrix (Lees & Peres, 2008). Another study showed similar evidence of the generalist taxa being relatively unaffected by deforestation and fragmentation degree and found indications that the diversity of generalist species instead were found to increase in areas e ...
... high tolerance towards a deforested matrix (Lees & Peres, 2008). Another study showed similar evidence of the generalist taxa being relatively unaffected by deforestation and fragmentation degree and found indications that the diversity of generalist species instead were found to increase in areas e ...
Functional diversity within a morphologically conservative genus of
... found that a variety of consumers were functionally equivalent largely as a consequence of being weak interactors, while Harris (1995) found general equivalence among a set of herbivores, but suggested that hers was not a fully adequate test. Our previous work identified little functional equivalenc ...
... found that a variety of consumers were functionally equivalent largely as a consequence of being weak interactors, while Harris (1995) found general equivalence among a set of herbivores, but suggested that hers was not a fully adequate test. Our previous work identified little functional equivalenc ...
Biological Journal of Linnean Society 103:475-494
... linking micro- and macroevolutionary processes (Bermingham & Moritz, 1998). By combining analyses of current population genetic structure with organismal distributions and historical changes in the environment, phylogeography provides the means for making strong inferences regarding dispersal, speci ...
... linking micro- and macroevolutionary processes (Bermingham & Moritz, 1998). By combining analyses of current population genetic structure with organismal distributions and historical changes in the environment, phylogeography provides the means for making strong inferences regarding dispersal, speci ...
Lecture Outlines Natural Disasters, 5th edition
... • Horseshoe crabs have survived for last 450 million years • Sharks have been successful predators for last 350 million years – biggest threat of extinction is today, from humans • Conifers, ferns, horsetail and scouring rushes have existed since 275 million years ago • Norfolk pine, gingko biloba, ...
... • Horseshoe crabs have survived for last 450 million years • Sharks have been successful predators for last 350 million years – biggest threat of extinction is today, from humans • Conifers, ferns, horsetail and scouring rushes have existed since 275 million years ago • Norfolk pine, gingko biloba, ...
The scope of the problem - Assets
... sense and history knowledge’. He goes on to say: ‘. . . mutualism has been thought to death . . .’ and ‘. . . the authors of this volume apparently think that there is something to say [about mutualism], but I wonder if we are not beating a dead horse’. Over the past 20 years there have been many mo ...
... sense and history knowledge’. He goes on to say: ‘. . . mutualism has been thought to death . . .’ and ‘. . . the authors of this volume apparently think that there is something to say [about mutualism], but I wonder if we are not beating a dead horse’. Over the past 20 years there have been many mo ...
Spatiotemporal food web dynamics along a desert riparian–upland
... (i.e. apparent competition). Oksanen (1990) then considered the case where adjacent habitats differ in productivity, resulting in asymmetrical indirect interactions between prey species as a result of predator foraging across habitat boundaries. She dubbed this mechanism spillover predation, since ...
... (i.e. apparent competition). Oksanen (1990) then considered the case where adjacent habitats differ in productivity, resulting in asymmetrical indirect interactions between prey species as a result of predator foraging across habitat boundaries. She dubbed this mechanism spillover predation, since ...
Biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.