A PRELIMINARY ECOREGION CLASSIFICATION SYSTEM FOR
... and functioning on local and wider scales. Ecological sensitivity (or fragility) refers to the system’s ability to resist disturbance and its capability to recover from disturbance once it has occurred (resilience) (Resh et al. 1988; Milner 1994). Both abiotic and biotic components of the system are ...
... and functioning on local and wider scales. Ecological sensitivity (or fragility) refers to the system’s ability to resist disturbance and its capability to recover from disturbance once it has occurred (resilience) (Resh et al. 1988; Milner 1994). Both abiotic and biotic components of the system are ...
Spatial patterns in the tropical forest reveal connections
... The method we implement along this paper is a multiscale analysis of the variance-mean ratio (VMR, also known as index of dispersion, Fano factor). As we shall see, the VMR technique allows for a direct demonstration of both negative feedback and aggregation on different scales. As long as one deals ...
... The method we implement along this paper is a multiscale analysis of the variance-mean ratio (VMR, also known as index of dispersion, Fano factor). As we shall see, the VMR technique allows for a direct demonstration of both negative feedback and aggregation on different scales. As long as one deals ...
POSTNOTE Environmental Impact of Tidal Energy
... uncertain how species composition, abundance and distribution has changed. There is no information on rates of habitat loss and gain, or fish mortality. The Eastern Scheldt was experiencing erosion prior to construction of the barrier and other dams,6 but this was amplified post-construction.7-9 T ...
... uncertain how species composition, abundance and distribution has changed. There is no information on rates of habitat loss and gain, or fish mortality. The Eastern Scheldt was experiencing erosion prior to construction of the barrier and other dams,6 but this was amplified post-construction.7-9 T ...
Creating Schoolyard Habitats - National Wildlife Federation
... hunting habits, needs for shelter and places to raise young—many species can live there. Scientists who study the interaction between an area’s physical environment and living things are called ecologists (“eco” is derived from the Greek “oikos” meaning home). They divide their studies by scale, fr ...
... hunting habits, needs for shelter and places to raise young—many species can live there. Scientists who study the interaction between an area’s physical environment and living things are called ecologists (“eco” is derived from the Greek “oikos” meaning home). They divide their studies by scale, fr ...
Unit 14 ECOSYSTEMS AND COMMUNITIES: ORGANISMS AND
... contain symbiotic bacteria, which produce a cellulose-digesting enzyme. d) they are slow moving and do not need very much energy. e) they have very large chitonous teeth capable of masticating the wood into cud, which is digestible. 7. A keystone predator increases species diversity when it preys up ...
... contain symbiotic bacteria, which produce a cellulose-digesting enzyme. d) they are slow moving and do not need very much energy. e) they have very large chitonous teeth capable of masticating the wood into cud, which is digestible. 7. A keystone predator increases species diversity when it preys up ...
Density-dependence in common tree species in a tropical dry forest
... the same species and interchanging their attributes without changing their spatial locations. The attributes included stem diameter and whether the tree had survived, died or been recruited during the census period. For each control correlation, we picked 10 Ns pairs of trees, where Ns is the total ...
... the same species and interchanging their attributes without changing their spatial locations. The attributes included stem diameter and whether the tree had survived, died or been recruited during the census period. For each control correlation, we picked 10 Ns pairs of trees, where Ns is the total ...
Why Marine Islands Are Farther Apart in the Tropics.
... differentiation and specialized adaptation to local conditions as Janzen proposed. But it also has the consequence of inhibiting colonization of distant sites, resulting in small geographic ranges and high endemism. Proposition 7. A low frequency of long-distance dispersal leads to high rates of spe ...
... differentiation and specialized adaptation to local conditions as Janzen proposed. But it also has the consequence of inhibiting colonization of distant sites, resulting in small geographic ranges and high endemism. Proposition 7. A low frequency of long-distance dispersal leads to high rates of spe ...
Raphicerus campestris - Endangered Wildlife Trust
... distributed (and continues to be well represented in protected areas according to 2012–2013 game counts), considered to be relatively common (for example, 3.78 animals / km2 on two small-livestock farms in the Northern Cape and Free State provinces) and no major threats have been identified within t ...
... distributed (and continues to be well represented in protected areas according to 2012–2013 game counts), considered to be relatively common (for example, 3.78 animals / km2 on two small-livestock farms in the Northern Cape and Free State provinces) and no major threats have been identified within t ...
the reproductive ecology of broadleaved trees and shrubs
... of cherries, plums, cascara buckthorn, and poisonoak are drupes. Drupelet: A small drupe. The fruits of raspberries and blackberries are aggregates of drupelets. Ecology: The science that deals with the relation of plants and animals to their environment and to the factors that control their reprodu ...
... of cherries, plums, cascara buckthorn, and poisonoak are drupes. Drupelet: A small drupe. The fruits of raspberries and blackberries are aggregates of drupelets. Ecology: The science that deals with the relation of plants and animals to their environment and to the factors that control their reprodu ...
01 - Science/Biology I: 1(A)
... Choose a word from the box below that best completes each sentence. ...
... Choose a word from the box below that best completes each sentence. ...
Great Victoria Desert - Natural Resources South Australia
... Acacias do not have leaves in a botanical sense, but instead have phyllodes. These are slim, flattened leafstalks. Phyllodes are arranged to avoid full sun and channel rainwater to the roots. Underground, Mulgas have a taproot which can help the plant access deeper moisture and store water and nutri ...
... Acacias do not have leaves in a botanical sense, but instead have phyllodes. These are slim, flattened leafstalks. Phyllodes are arranged to avoid full sun and channel rainwater to the roots. Underground, Mulgas have a taproot which can help the plant access deeper moisture and store water and nutri ...
Summaries of the published conference proceedings
... By preservation of virgin steppe the indigenous phytobiota is preserved, however such preserve conditions proves to be favourable for some species and adverse for others. The core zone provides some representatives of the entomofauna, the herpetofauna, steppe ornithological complex and small mammals ...
... By preservation of virgin steppe the indigenous phytobiota is preserved, however such preserve conditions proves to be favourable for some species and adverse for others. The core zone provides some representatives of the entomofauna, the herpetofauna, steppe ornithological complex and small mammals ...
Available
... The community-unit hypothesis/ integrated hypothesis The integrated hypothesis of community structure depicts a community as an assemblage of closely linked species locked into association by mandatory biotic interactions. The community functions as an integrated unit, as a super-organism. ...
... The community-unit hypothesis/ integrated hypothesis The integrated hypothesis of community structure depicts a community as an assemblage of closely linked species locked into association by mandatory biotic interactions. The community functions as an integrated unit, as a super-organism. ...
Full Text - Cedar Creek Ecosystem Science Reserve
... differences on the total plant biomass of communities that differ in their original species composition. Thus, for this case, diversity explains about one-third of the variance in total plant biomass, whereas species identity explains about two-thirds. The decreased average R* values that occur at h ...
... differences on the total plant biomass of communities that differ in their original species composition. Thus, for this case, diversity explains about one-third of the variance in total plant biomass, whereas species identity explains about two-thirds. The decreased average R* values that occur at h ...
Northern Rockies Ecosystem Types and Descriptions
... Montane dry mixed-conifer forest The dry mixed-conifer forest ecosystem in the montane zone has highly variable species composition. The type is often dominated by Douglas-fir (Pseudotsuga menziesii) and found on warm, dry sites with gravelly soils. Other conifers in the dry mixed-conifer forests c ...
... Montane dry mixed-conifer forest The dry mixed-conifer forest ecosystem in the montane zone has highly variable species composition. The type is often dominated by Douglas-fir (Pseudotsuga menziesii) and found on warm, dry sites with gravelly soils. Other conifers in the dry mixed-conifer forests c ...
The Ecological Significance of the Herbaceous Layer in
... Loss of biodiversity is occurring on a global scale and at an ever-increasing rate. This is especially true for forest ecosystems, which often are near areas of high human population density. The resultant land use (including forest use, urban development, and conversion to agriculture) can exacerba ...
... Loss of biodiversity is occurring on a global scale and at an ever-increasing rate. This is especially true for forest ecosystems, which often are near areas of high human population density. The resultant land use (including forest use, urban development, and conversion to agriculture) can exacerba ...
Biodiversity effects on productivity and stability of marine macroalgal
... supply, and at four field sites that differed naturally in environmental conditions. Concordant with theory, nutrient addition promoted positive species richness effects on algal growth in the first mesocosm experiment; however, it tended to weaken the positive diversity relationship found under amb ...
... supply, and at four field sites that differed naturally in environmental conditions. Concordant with theory, nutrient addition promoted positive species richness effects on algal growth in the first mesocosm experiment; however, it tended to weaken the positive diversity relationship found under amb ...
Scholarly Interest Report
... and agricultural monocultures often reduce diversity, an understanding of the ecological function of diversity (including both species diversity within communities and genetic diversity within species) can inform ecosystem conservation. For this question, I used the shrub Baccharis pilularis, which ...
... and agricultural monocultures often reduce diversity, an understanding of the ecological function of diversity (including both species diversity within communities and genetic diversity within species) can inform ecosystem conservation. For this question, I used the shrub Baccharis pilularis, which ...
A River Runs Through It: Riverine Systems Ecology and Restoration
... salmon runs on earth. From early 19th century to the present, salmon and steelhead have declined from historical run sizes occasionally approaching 20 million fish to current levels of 1-2 million returning adults, and many of these fish originate in hatcheries. I trace the history of Columbia River ...
... salmon runs on earth. From early 19th century to the present, salmon and steelhead have declined from historical run sizes occasionally approaching 20 million fish to current levels of 1-2 million returning adults, and many of these fish originate in hatcheries. I trace the history of Columbia River ...
3.1 Section Objectives – page 65
... • Secondary succession, however, occurs in areas that still have land containing nutrients in the soil.- Not completely starting from scratch, like primary. ...
... • Secondary succession, however, occurs in areas that still have land containing nutrients in the soil.- Not completely starting from scratch, like primary. ...
2010 - Welcome to the University of Guam
... Islands centuries ago. They undoubtedly have effects on ecosystems, and are identified by natural resource agencies as a major conservation concern. However, specific effects with regards to limestone forest plants are poorly understood. This project seeks to investigate their effects on the plant s ...
... Islands centuries ago. They undoubtedly have effects on ecosystems, and are identified by natural resource agencies as a major conservation concern. However, specific effects with regards to limestone forest plants are poorly understood. This project seeks to investigate their effects on the plant s ...
Environmental Science
... and purification methods to include the following factors: costs, environmental degradation, ease of extraction. T5CC3PO1 - Compare and contrast the current amount of fossil fuel available in the world and the global demand. T5CC4PO1 - Identify how synfuels are created. T5CC5PO2 - Discuss the advant ...
... and purification methods to include the following factors: costs, environmental degradation, ease of extraction. T5CC3PO1 - Compare and contrast the current amount of fossil fuel available in the world and the global demand. T5CC4PO1 - Identify how synfuels are created. T5CC5PO2 - Discuss the advant ...
APPENDIX D: Specialist reports - Sazi Environmental Consulting
... The dominant vegetation type found close to the study site is grasslands. The Soweto Highveld Grassland vegetation type extends westwards along the southern edge of the Johannesburg Dome (including part of Soweto) as far as the vicinity of Randfontein. It occurs on gently to moderately undulating la ...
... The dominant vegetation type found close to the study site is grasslands. The Soweto Highveld Grassland vegetation type extends westwards along the southern edge of the Johannesburg Dome (including part of Soweto) as far as the vicinity of Randfontein. It occurs on gently to moderately undulating la ...
Appendix 2: Guidelines for the field assessment of native wetland
... Some areas of wetlands of marginal quality have the biological capacity to improve to an acceptable standard in a reasonably short time, particularly if influences which depress their quality are removed. Examples are wetlands which have lost quality through being grazed, or which contain an excessi ...
... Some areas of wetlands of marginal quality have the biological capacity to improve to an acceptable standard in a reasonably short time, particularly if influences which depress their quality are removed. Examples are wetlands which have lost quality through being grazed, or which contain an excessi ...
Appendix 2: Guidelines for the field assessment of native wetland
... Some areas of wetlands of marginal quality have the biological capacity to improve to an acceptable standard in a reasonably short time, particularly if influences which depress their quality are removed. Examples are wetlands which have lost quality through being grazed, or which contain an excessi ...
... Some areas of wetlands of marginal quality have the biological capacity to improve to an acceptable standard in a reasonably short time, particularly if influences which depress their quality are removed. Examples are wetlands which have lost quality through being grazed, or which contain an excessi ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.