2. Biotic and Abiotic factors
... ecosystem are called limiting factors. Abiotic factors often act as limiting factors by restricting the growth of populations in nature. An example of this would include low annual average temperature, common to the Arctic region, which restricts the growth of trees and insects. Biotic factors can a ...
... ecosystem are called limiting factors. Abiotic factors often act as limiting factors by restricting the growth of populations in nature. An example of this would include low annual average temperature, common to the Arctic region, which restricts the growth of trees and insects. Biotic factors can a ...
Lowland Rainforest on Floodplain
... differences in the prey taken by Powerful Owls. For example in southern NSW, Ringtail Possum make up the bulk of prey in the lowland or coastal habitat. At higher elevations, such as the tableland forests, the Greater Glider may constitute almost all of the prey for a pair of Powerful Owls. Birds co ...
... differences in the prey taken by Powerful Owls. For example in southern NSW, Ringtail Possum make up the bulk of prey in the lowland or coastal habitat. At higher elevations, such as the tableland forests, the Greater Glider may constitute almost all of the prey for a pair of Powerful Owls. Birds co ...
Modeling the Boundaries of Plant Ecotones of Mountain Ecosystems
... altitudinal boundaries of the plant communities in the mountainous regions have also shifted [7–14]. Climate change may be a reason for the shifts of the boundaries of the natural zones, but the effect of the climate is often combined with the effects of the interactions between ecosystem components ...
... altitudinal boundaries of the plant communities in the mountainous regions have also shifted [7–14]. Climate change may be a reason for the shifts of the boundaries of the natural zones, but the effect of the climate is often combined with the effects of the interactions between ecosystem components ...
Species loss and the structure and functioning of multitrophic
... both basal and other levels, the basal level can be as, or more, diverse than the levels above (Havens 1992) though this is not inevitably the case (Martinez 1991). Assignment of species to the other categories is ambiguous. Intermediate species can be second, third or fourth level consumers, provid ...
... both basal and other levels, the basal level can be as, or more, diverse than the levels above (Havens 1992) though this is not inevitably the case (Martinez 1991). Assignment of species to the other categories is ambiguous. Intermediate species can be second, third or fourth level consumers, provid ...
Ecology 84 - A Thousand Invisible Cords
... their biomass’’ (Power et al. 1996). Although all interacting community members are likely to show community genetic effects, the extended phenotypes resulting from genetic variation in these dominant species are likely to have particularly strong effects on the communities in which they are embedde ...
... their biomass’’ (Power et al. 1996). Although all interacting community members are likely to show community genetic effects, the extended phenotypes resulting from genetic variation in these dominant species are likely to have particularly strong effects on the communities in which they are embedde ...
Soil phosphorus heterogeneity promotes tree species diversity and
... The niche theory predicts that environmental heterogeneity and species diversity are positively correlated in tropical forests, whereas the neutral theory suggests that stochastic processes are more important in determining species diversity. This study sought to investigate the effects of soil nutr ...
... The niche theory predicts that environmental heterogeneity and species diversity are positively correlated in tropical forests, whereas the neutral theory suggests that stochastic processes are more important in determining species diversity. This study sought to investigate the effects of soil nutr ...
Reprinted - RERO DOC
... Before going into the history and state-of-the-art of this research theme, it is first necessary to go through some definitions. Intraspecific interactions – interactions between members of the same species - are of course essential for survival and reproduction. They are very rich and give rise to ...
... Before going into the history and state-of-the-art of this research theme, it is first necessary to go through some definitions. Intraspecific interactions – interactions between members of the same species - are of course essential for survival and reproduction. They are very rich and give rise to ...
Coexistence and relative abundance in annual plant assemblages
... competitors has long been hypothesized and has received consistent empirical support for both perennial and annual systems (Black 1958; Gross and Werner 1982; Gross 1984; McConnaughay and Bazzaz 1987; Rees 1995; Eriksson 1997; Turnbull et al. 1999; Freckleton and Watkinson 2001; Leishman 2001; see L ...
... competitors has long been hypothesized and has received consistent empirical support for both perennial and annual systems (Black 1958; Gross and Werner 1982; Gross 1984; McConnaughay and Bazzaz 1987; Rees 1995; Eriksson 1997; Turnbull et al. 1999; Freckleton and Watkinson 2001; Leishman 2001; see L ...
ENVIRONMENTAL CONDITIONS REPORT
... The intention in this part of the investigation is to describe the vertebrate fauna (other than fish) present in the study area, to identify its ecological conservation values and to discuss the condition of the fauna with particular reference to implications of water resource management. Unlike the ...
... The intention in this part of the investigation is to describe the vertebrate fauna (other than fish) present in the study area, to identify its ecological conservation values and to discuss the condition of the fauna with particular reference to implications of water resource management. Unlike the ...
REGIME SHIFTS, RESILIENCE, AND BIODIVERSITY IN
... Scheffer 1997). The two regimes of most concern to people who use the lakes are the clear-water and turbid-water regimes. In the clear-water regime, phosphorus inputs, phytoplankton biomass, and recycling of phosphorus from sediments are relatively low. In the turbid-water regime, these same variabl ...
... Scheffer 1997). The two regimes of most concern to people who use the lakes are the clear-water and turbid-water regimes. In the clear-water regime, phosphorus inputs, phytoplankton biomass, and recycling of phosphorus from sediments are relatively low. In the turbid-water regime, these same variabl ...
Ocular morphology in antarctic notothenioid fishes
... fishes composing the presumably monophyletic suborder Notothenioidei (DeWitt, '71; Iwami, '85). It has been hypothesized that the ancestral notothenioid stock was associated with the continent since the waters began to cool 38 million years ago (Regan, '14; Norman, '38; DeWitt, '71). During a long p ...
... fishes composing the presumably monophyletic suborder Notothenioidei (DeWitt, '71; Iwami, '85). It has been hypothesized that the ancestral notothenioid stock was associated with the continent since the waters began to cool 38 million years ago (Regan, '14; Norman, '38; DeWitt, '71). During a long p ...
Live-bearing Seastar - Natural Values Atlas
... The Tasmanian Live-bearing Seastar is a small orange-yellow seastar, up to 15 mm across, with five arms and a rounded pentagonal shape. Endemic to Tasmania, the species is known only from waters between the high and low tide mark (littoral waters) in the State’s southeast. The seastar is unusual in ...
... The Tasmanian Live-bearing Seastar is a small orange-yellow seastar, up to 15 mm across, with five arms and a rounded pentagonal shape. Endemic to Tasmania, the species is known only from waters between the high and low tide mark (littoral waters) in the State’s southeast. The seastar is unusual in ...
Module 6 Ecological Principles - Members
... species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topography of the land or sea. At a large scale, ecological changes are often expressed in relation to latitude or altitude. These are convenient surrogate ...
... species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topography of the land or sea. At a large scale, ecological changes are often expressed in relation to latitude or altitude. These are convenient surrogate ...
OPERATION DESERT TORTOISE
... The Agassiz’s Desert Tortoise (Go pherus agassizii) (desert tortoise), a federally threatened species endemic to the Mojave and Sonoran deserts, is emblematic of the widespread impact humans have on desert ecosystems. Though significant emphasis has been placed on species recovery and several projec ...
... The Agassiz’s Desert Tortoise (Go pherus agassizii) (desert tortoise), a federally threatened species endemic to the Mojave and Sonoran deserts, is emblematic of the widespread impact humans have on desert ecosystems. Though significant emphasis has been placed on species recovery and several projec ...
Endophytic fungi alter relationships between diversity and
... endophyte, it experiences an increase in resource acquisition relative to its uninfected state. This increase will be strongest when resources are most limiting (i.e. at greater levels of species diversity). As the infected grass is superior to the uninfected grass in resource acquisition, it can mo ...
... endophyte, it experiences an increase in resource acquisition relative to its uninfected state. This increase will be strongest when resources are most limiting (i.e. at greater levels of species diversity). As the infected grass is superior to the uninfected grass in resource acquisition, it can mo ...
Designing marine reserves for interacting species: Insights
... loss that causes the loss of the superior competitor has the same value in the community model as the analogous single-species model of the superior competitor only. The predicted loss of the superior competitor first holds for extensions of the basic model that incorporate an arbitrary number of sp ...
... loss that causes the loss of the superior competitor has the same value in the community model as the analogous single-species model of the superior competitor only. The predicted loss of the superior competitor first holds for extensions of the basic model that incorporate an arbitrary number of sp ...
J F MAMMALS OF THE FREEMAN RANCH, HAYS COUNTY, TEXAS
... Changes induced by ungulate grazing on the local environment have been documented across a wide range of North American grassland types (Grant et al., 1982). Grazing alters the structure of native biotic communities, affecting changes in plant species composition and diversity, primary productivity, ...
... Changes induced by ungulate grazing on the local environment have been documented across a wide range of North American grassland types (Grant et al., 1982). Grazing alters the structure of native biotic communities, affecting changes in plant species composition and diversity, primary productivity, ...
(Araneae, Gnaphosidae) along the altitudinal gradient of
... also supported. The high activity recorded for the species that persist on the high mountains of Crete is indicative of a tolerant arachnofauna, and is considered to result from relaxation of competitive interactions with other species. This is related to a reduction in species numbers, shortening o ...
... also supported. The high activity recorded for the species that persist on the high mountains of Crete is indicative of a tolerant arachnofauna, and is considered to result from relaxation of competitive interactions with other species. This is related to a reduction in species numbers, shortening o ...
Biodiversity and Climate Change: Integrating Evolutionary and
... & Hanski 2006). This is the case for many introduced species, for which selection-driven phenotypic changes have increased their invasive potential (e.g., Lavergne & Molofsky 2007, Phillips 2009). For instance, local adaptation has occurred over less than 26 generations in the Chinook salmon after i ...
... & Hanski 2006). This is the case for many introduced species, for which selection-driven phenotypic changes have increased their invasive potential (e.g., Lavergne & Molofsky 2007, Phillips 2009). For instance, local adaptation has occurred over less than 26 generations in the Chinook salmon after i ...
Towards a trait-based quantification of species
... argue that, however, intraspecific trait variability could be used to assess niche breadth. At a first approximation, intraspecific trait variability can be assessed by the magnitude of trait variability recorded among existing databases for a given species (Fig. 1b). Alternatively, experiments or o ...
... argue that, however, intraspecific trait variability could be used to assess niche breadth. At a first approximation, intraspecific trait variability can be assessed by the magnitude of trait variability recorded among existing databases for a given species (Fig. 1b). Alternatively, experiments or o ...
Correlating species and spectral diversities using hyperspectral
... absorption) from original reflectance using continuum removal. A continuum hull was established over the entire spectral profile. Then, the reflectance profile was subtracted from the continuum hull. The normalized reflectance was then subtracted from one to obtain normalized absorption (Zhang et al ...
... absorption) from original reflectance using continuum removal. A continuum hull was established over the entire spectral profile. Then, the reflectance profile was subtracted from the continuum hull. The normalized reflectance was then subtracted from one to obtain normalized absorption (Zhang et al ...
Elephants and Ecosystems
... for easements and corridors to accommodate population growth and seasonal movements. 15. Elephants eat large amounts of plant material from ground level to the tree canopy. Foraging elephants have strongly influenced the shape, patchiness and species composition of ecosystems and habitats we see tod ...
... for easements and corridors to accommodate population growth and seasonal movements. 15. Elephants eat large amounts of plant material from ground level to the tree canopy. Foraging elephants have strongly influenced the shape, patchiness and species composition of ecosystems and habitats we see tod ...
Habitat Area of Particular Concern Candidate Proposal Submission
... complex, hard-bottom habitat with emergent epifauna has been well-studied and documented. Given the fact that the Georges Bank cod population is overfished, subject to overfishing, and suffering from a decade of below-average recruitment, this HAPC designation is critically needed to help improve th ...
... complex, hard-bottom habitat with emergent epifauna has been well-studied and documented. Given the fact that the Georges Bank cod population is overfished, subject to overfishing, and suffering from a decade of below-average recruitment, this HAPC designation is critically needed to help improve th ...
pest risk assessment - Department of Primary Industries, Parks
... South Australia under the National Parks and Wildlife Act 1972. It is not listed on the IUCN Red List of Threatened Species. The species is a ‘controlled animal’ under the Tasmanian Nature Conservation Act 2002. The Lace Monitor is not considered a pest species. They have not established feral popul ...
... South Australia under the National Parks and Wildlife Act 1972. It is not listed on the IUCN Red List of Threatened Species. The species is a ‘controlled animal’ under the Tasmanian Nature Conservation Act 2002. The Lace Monitor is not considered a pest species. They have not established feral popul ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.