Grasslands Teachers Guide - Alberta Prairie Conservation Forum
... The Grasslands region has a distinctive character. Grassland vegetation forms a relatively low ground cover with many wide-open spaces. While at first the space may feel lifeless, a closer look reveals a diversity of living things that have adapted to these relatively harsh conditions. In many parts ...
... The Grasslands region has a distinctive character. Grassland vegetation forms a relatively low ground cover with many wide-open spaces. While at first the space may feel lifeless, a closer look reveals a diversity of living things that have adapted to these relatively harsh conditions. In many parts ...
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... 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 ...
Final Report - The Rufford Foundation
... On the other hand, the High-altitude Troop spent more time feeding on unripe fruits (32.65%). This difference is possibly due to the different observation periods of these sites. The Village Troop was mainly observed in winter when fruits were not abundant and this may have led them to feed more on ...
... On the other hand, the High-altitude Troop spent more time feeding on unripe fruits (32.65%). This difference is possibly due to the different observation periods of these sites. The Village Troop was mainly observed in winter when fruits were not abundant and this may have led them to feed more on ...
Competition intensity and its importance: results of field experiments
... The data from two experiments on the perennial grass species Anthoxanthum odoratum (further referred to as Anthoxanthum), conducted in Estonia and in Norway, were included in this analysis. Anthoxanthum is a common plant in both study areas, and reproduces well both sexually and vegetatively. Its ra ...
... The data from two experiments on the perennial grass species Anthoxanthum odoratum (further referred to as Anthoxanthum), conducted in Estonia and in Norway, were included in this analysis. Anthoxanthum is a common plant in both study areas, and reproduces well both sexually and vegetatively. Its ra ...
biodiversity in drylands - Food and Agriculture Organization of the
... fix atmospheric nitrogen through legume-rhizobia associations and (ii) extract phosphorus, various micro-nutrients, and water under very low moisture conditions, through mycorrhizal associations. Also, some free-living organisms contribute significantly to the nitrogen balance of dryland ecosystems. ...
... fix atmospheric nitrogen through legume-rhizobia associations and (ii) extract phosphorus, various micro-nutrients, and water under very low moisture conditions, through mycorrhizal associations. Also, some free-living organisms contribute significantly to the nitrogen balance of dryland ecosystems. ...
Commercial Frog Farming
... Many “frog farms” turn out to be natural marshy areas, swamps or shallow ponds with abundant food and habitat suitable to the needs of wild frogs. At some frog farms, culture methods simply consist of increasing the shoreline area, erecting a fence to exclude predators and retain the frogs, and stoc ...
... Many “frog farms” turn out to be natural marshy areas, swamps or shallow ponds with abundant food and habitat suitable to the needs of wild frogs. At some frog farms, culture methods simply consist of increasing the shoreline area, erecting a fence to exclude predators and retain the frogs, and stoc ...
Herbivores, resources and risks: alternating regulation along
... susceptible to all carnivores. Large prey, such as buffalo (Syncerus caffer), are difficult to ...
... susceptible to all carnivores. Large prey, such as buffalo (Syncerus caffer), are difficult to ...
Information Fact Sheet on Coral Reef
... of microscopic creatures that live either on the reef’s surface or in mid-water directly above. The latter are referred to as zooplankton, a mixture of larval and adult forms that are important food sources for many reef inhabitants. Every species found on coral reefs has distinct life style that al ...
... of microscopic creatures that live either on the reef’s surface or in mid-water directly above. The latter are referred to as zooplankton, a mixture of larval and adult forms that are important food sources for many reef inhabitants. Every species found on coral reefs has distinct life style that al ...
Primary Succession and Ecosystem Rehabilitation
... of primary succession. Such activities – at any scale – will become an increasing part of our global economy. Preservation or rehabilitation of ecosystem services following a disturbance can have positive influences. For example, a hurricane may directly reduce crop production through flooding or in ...
... of primary succession. Such activities – at any scale – will become an increasing part of our global economy. Preservation or rehabilitation of ecosystem services following a disturbance can have positive influences. For example, a hurricane may directly reduce crop production through flooding or in ...
Ansorge, H., Kluth, G., and Hahne, S. (2006). Feeding ecology of
... The faeces were treated by a technical process as described in Jêdrzejewska and Jêdrzejewski (1998) and accord ing to the stan dard meth ods of Lockie (1959) and Goszczyñski (1974). The samples were soaked and washed in a sieve of 0.5-mm mesh width to clean the faeces contents from mud and debris. A ...
... The faeces were treated by a technical process as described in Jêdrzejewska and Jêdrzejewski (1998) and accord ing to the stan dard meth ods of Lockie (1959) and Goszczyñski (1974). The samples were soaked and washed in a sieve of 0.5-mm mesh width to clean the faeces contents from mud and debris. A ...
Israa Dorgham
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
Terrestrial trophic dynamics in the Canadian Arctic
... A key problem is how we can obtain estimates of plant production in arctic areas from short site visits. We could not measure plant productivity directly, so we must rely on other production data for our sites. We have used literature data on net primary production and production per unit biomass (P ...
... A key problem is how we can obtain estimates of plant production in arctic areas from short site visits. We could not measure plant productivity directly, so we must rely on other production data for our sites. We have used literature data on net primary production and production per unit biomass (P ...
Chances and challenges in the conservation of
... Most conservation efforts in aquatic ecosystems focus on surface waters. This is understandable given their public visibility, accessibility and, in many parts of the world, stark evidence of their vulnerability to human impact. On the other hand, programmes to protect and conserve groundwaters, and ...
... Most conservation efforts in aquatic ecosystems focus on surface waters. This is understandable given their public visibility, accessibility and, in many parts of the world, stark evidence of their vulnerability to human impact. On the other hand, programmes to protect and conserve groundwaters, and ...
ecological opportunity and phenotypic plasticity
... exclusion by the species that was the superior competitor for the remaining resource. Thus, ecological character displacement and, therefore, coexistence of close competitors, was only possible when diverse resources were available. Finally, even if exploitable resources are available, character dis ...
... exclusion by the species that was the superior competitor for the remaining resource. Thus, ecological character displacement and, therefore, coexistence of close competitors, was only possible when diverse resources were available. Finally, even if exploitable resources are available, character dis ...
An Invasive Species Reduces Aquatic Insect Flux to Terrestrial Food
... Spring at The Fish Springs National Wildlife Refuge and filled them with 0.6 meters of natural spring water. Each mesocosm had a circular meshed opening (2.5 cm diameter) near the bottom that allowed for the exchange of but prevented the movement of fish. We also replenished each mesocosm with appro ...
... Spring at The Fish Springs National Wildlife Refuge and filled them with 0.6 meters of natural spring water. Each mesocosm had a circular meshed opening (2.5 cm diameter) near the bottom that allowed for the exchange of but prevented the movement of fish. We also replenished each mesocosm with appro ...
Unit*1: Topic-2: Ecology and Ecosystem
... 1) Autecology: It deals with the study of an individual species of organisms and its population. The Ecologist studies the behavior and adaptations of particular species to the environmental condition of every stage of that individual’s life cycle. It is also called the Species Ecology. 2) Synecolo ...
... 1) Autecology: It deals with the study of an individual species of organisms and its population. The Ecologist studies the behavior and adaptations of particular species to the environmental condition of every stage of that individual’s life cycle. It is also called the Species Ecology. 2) Synecolo ...
Spatiotemporal food web dynamics along a desert riparian–upland
... nutrients, and prey, largely ignoring the movement of predators between habitats that differ in productivity (and how predators integrate pulses in resource availability over time). We set out to study seasonal variation in food web interactions between mammalian carnivores and their rodent prey alo ...
... nutrients, and prey, largely ignoring the movement of predators between habitats that differ in productivity (and how predators integrate pulses in resource availability over time). We set out to study seasonal variation in food web interactions between mammalian carnivores and their rodent prey alo ...
Chapter 10 Notes
... Coral Reefs and Coastal Ecosystem • Reefs provide millions of people with food, tourism revenue, coastal protection, and sources of new chemicals, but are poorly studied and not as well protected by laws as terrestrial areas are. • Nearly 60 percent of Earth’s coral reefs are threatened by human act ...
... Coral Reefs and Coastal Ecosystem • Reefs provide millions of people with food, tourism revenue, coastal protection, and sources of new chemicals, but are poorly studied and not as well protected by laws as terrestrial areas are. • Nearly 60 percent of Earth’s coral reefs are threatened by human act ...
Biomass and Habitat Partitioning of Desmognathus on Wet Rock
... respectively. This pattern follows the distribution seen in the wet rock face assemblage of salamanders. In salamander assemblages that are old enough, the members should be well co-adapted and resource competition should be minimal (Krzysik, 1979). Habitat is usually the major resource partitioned ...
... respectively. This pattern follows the distribution seen in the wet rock face assemblage of salamanders. In salamander assemblages that are old enough, the members should be well co-adapted and resource competition should be minimal (Krzysik, 1979). Habitat is usually the major resource partitioned ...
Mechanisms of plant survival and mortality during drought: why do
... supply coupled with high evaporative demand causes xylem conduits and the rhizosphere to cavitate (become air-filled), stopping the flow of water and desiccating plant tissues. The hydraulic-failure hypothesis is based on the tenet that complete desiccation leads to cellular death. Hydraulic failure ...
... supply coupled with high evaporative demand causes xylem conduits and the rhizosphere to cavitate (become air-filled), stopping the flow of water and desiccating plant tissues. The hydraulic-failure hypothesis is based on the tenet that complete desiccation leads to cellular death. Hydraulic failure ...
1 Research paper Native grass establishment in grassy woodlands
... Facelli 2006), and while fertility remains high annual grasses may be more competitive than native grasses (Groves et al. 2003). Replacement of tall C4 perennial grasses with short C3 perennial and annual grasses is likely to alter the spatial structure of the grassy layer. Canopy gaps in grasslands ...
... Facelli 2006), and while fertility remains high annual grasses may be more competitive than native grasses (Groves et al. 2003). Replacement of tall C4 perennial grasses with short C3 perennial and annual grasses is likely to alter the spatial structure of the grassy layer. Canopy gaps in grasslands ...
Israa Dorgham
... observation methods of the time in his work, suggesting that one idea is to emphasize underlying mathematical distributions and causes of deviance from these distributions which is a contribution made by Hairston et al. Nine years after the classic paper was published, Vandermeer discussed the “rece ...
... observation methods of the time in his work, suggesting that one idea is to emphasize underlying mathematical distributions and causes of deviance from these distributions which is a contribution made by Hairston et al. Nine years after the classic paper was published, Vandermeer discussed the “rece ...
Environmental Science
... o Design & create an informational presentation for one or more terrestrial biomes & aquatic ecosystems. Read the section titled “Presentation Criteria” below for directions on what information to include. Scoring o In order to receive any credit, a works cited page must be included. If a works cite ...
... o Design & create an informational presentation for one or more terrestrial biomes & aquatic ecosystems. Read the section titled “Presentation Criteria” below for directions on what information to include. Scoring o In order to receive any credit, a works cited page must be included. If a works cite ...
Dynamic Energy Budget model parameter estimation for the bivalve
... Importantly, there are several reasons to expect that the physiological responses of M. californianus may differ substantially from those of its congeners. This species is particularly long-lived and characteristically can live upwards of 50–100 years, unlike species in the M. edulis complex, which ...
... Importantly, there are several reasons to expect that the physiological responses of M. californianus may differ substantially from those of its congeners. This species is particularly long-lived and characteristically can live upwards of 50–100 years, unlike species in the M. edulis complex, which ...