Diss-Zooplankton-Impakt on phytoplankton
... in P and, hence, have low body N:P ratios. Based on these findings, the following hypotheses were made: (1) Copepods shift the size structure of phytoplankton assemblages to small particles by removing both, large phytoplankton and microzooplankton. In contrast, mechanical sievers filter smaller par ...
... in P and, hence, have low body N:P ratios. Based on these findings, the following hypotheses were made: (1) Copepods shift the size structure of phytoplankton assemblages to small particles by removing both, large phytoplankton and microzooplankton. In contrast, mechanical sievers filter smaller par ...
Enabling the Market: Incentives for Biodiversity in the Rangelands
... in slow decline and extremely vulnerable to inappropriate land uses, fire management practices and invasive weed species. Biodiversity conservation options in the rangelands are likely to be highly cost-effective and could alleviate the need for large remedial investments in the future. Because thei ...
... in slow decline and extremely vulnerable to inappropriate land uses, fire management practices and invasive weed species. Biodiversity conservation options in the rangelands are likely to be highly cost-effective and could alleviate the need for large remedial investments in the future. Because thei ...
Arracacia xanthorrhiza Bancroft
... the preponderance of vegetative propagation in South American crops as opposed to seed-based agriculture in the Old World (Hawkes 1969). Evidence for both biennial (in Peru) and perennial wild arracacha (in Ecuador) will be presented in this paper for the first time. If the hypothesis that both form ...
... the preponderance of vegetative propagation in South American crops as opposed to seed-based agriculture in the Old World (Hawkes 1969). Evidence for both biennial (in Peru) and perennial wild arracacha (in Ecuador) will be presented in this paper for the first time. If the hypothesis that both form ...
Linking Landscapes and Food Webs: Effects of Omnivorous Fish
... Figure 3. Gizzard shad link watersheds and the pelagic grazing food chain in reservoirs. The watershed is the ultimate regulator of reservoir food webs by providing nutrients directly to phytoplankton and detritus that subsidizes gizzard shad populations; sedimentation of phytoplankton also provides ...
... Figure 3. Gizzard shad link watersheds and the pelagic grazing food chain in reservoirs. The watershed is the ultimate regulator of reservoir food webs by providing nutrients directly to phytoplankton and detritus that subsidizes gizzard shad populations; sedimentation of phytoplankton also provides ...
... Aquaculture is developing, expanding and intensifying in almost all regions of the world, except in sub-Saharan Africa. Global population demand for aquatic food products is increasing, the production from capture fisheries has levelled off, and most of the main fishing areas have reached their maxi ...
Assessing the future global impacts of ozone on
... Ozone is a major secondary air pollutant, the current concentrations of which have been shown to have significant adverse effects on crop yields, forest growth and species composition. In North America and Europe, emissions of ozone precursors are decreasing but in other regions of the world, especi ...
... Ozone is a major secondary air pollutant, the current concentrations of which have been shown to have significant adverse effects on crop yields, forest growth and species composition. In North America and Europe, emissions of ozone precursors are decreasing but in other regions of the world, especi ...
2. revegetation
... the clearing of vegetated areas and soil disturbance. Revegetation requires the prior establishment of soil conditions suitable for plant growth through effective management of topsoil and the control of weeds and other site factors. All plants require water to establish and grow. For most locations ...
... the clearing of vegetated areas and soil disturbance. Revegetation requires the prior establishment of soil conditions suitable for plant growth through effective management of topsoil and the control of weeds and other site factors. All plants require water to establish and grow. For most locations ...
Environmental Science Study Guide Fall Final Answer
... ____________________. 111. It is winter. You are in a place with tall trees full of leaves. It is 0°C. You are likely in a ____________________. 112. You are in a place with many trees that receives 300 cm of rainfall per year. You are likely in a ____________________. 113. An ecosystem consists of ...
... ____________________. 111. It is winter. You are in a place with tall trees full of leaves. It is 0°C. You are likely in a ____________________. 112. You are in a place with many trees that receives 300 cm of rainfall per year. You are likely in a ____________________. 113. An ecosystem consists of ...
Whole Ecosystem Nitrogen Manipulation Experiments: A
... to be approximately 846 kt N (INDITE 1994). It has been forecast that, due to the penetration of catalysts into the road vehicle fleet, emissions from road vehicles will reduce by 74% between 1998 and 2010. The UK emissions of NOx for 1998 are shown in Figure 1.1. The map was compiled from the NAEI ...
... to be approximately 846 kt N (INDITE 1994). It has been forecast that, due to the penetration of catalysts into the road vehicle fleet, emissions from road vehicles will reduce by 74% between 1998 and 2010. The UK emissions of NOx for 1998 are shown in Figure 1.1. The map was compiled from the NAEI ...
chapter9
... major market outlets over the last 15 years have led to an increased interest and economic incentive for production of larger crawfish. Until about the late 1980s farm-gate pricing was influenced largely by supply and demand with little regard to crawfish size as long as it was above the minimum acc ...
... major market outlets over the last 15 years have led to an increased interest and economic incentive for production of larger crawfish. Until about the late 1980s farm-gate pricing was influenced largely by supply and demand with little regard to crawfish size as long as it was above the minimum acc ...
PC 222 Final report 2005
... apply to an edible crop, when Integrated Pest Management (IPM) is practised. T. palmi is notoriously difficult to control by chemical means alone and effective IPM measures need to be developed which can be utilised in a UK situation. T. palmi occurs out-of-doors in many tropical and sub-tropical co ...
... apply to an edible crop, when Integrated Pest Management (IPM) is practised. T. palmi is notoriously difficult to control by chemical means alone and effective IPM measures need to be developed which can be utilised in a UK situation. T. palmi occurs out-of-doors in many tropical and sub-tropical co ...
The importance of predation, cannibalism and resources for
... crayfish densities among streams and, Seiler and Turner (2004) showed that acidification had a negative effect on the growth for individual crayfish but a positive effect on population size. The population size in acidified streams was six fold larger relative to neutral streams. This can probably ...
... crayfish densities among streams and, Seiler and Turner (2004) showed that acidification had a negative effect on the growth for individual crayfish but a positive effect on population size. The population size in acidified streams was six fold larger relative to neutral streams. This can probably ...
POSITIVE INDIRECT EFFECTS OF REEF FISHES ON KELP
... otter populations have suffered another decline due to predation from killer whales; this predation may indirectly result in an increase in populations of sea urchins, which subsequently cause a decrease in the abundance of kelp. Many other studies suggest that the distribution and abundance of kelp ...
... otter populations have suffered another decline due to predation from killer whales; this predation may indirectly result in an increase in populations of sea urchins, which subsequently cause a decrease in the abundance of kelp. Many other studies suggest that the distribution and abundance of kelp ...
The diet of saltmarsh consumers - LSU Digital Commons
... Estuaries and associated salt marshes are among the most productive habitats in the world. Primary producers including macrophytes and their detritus, phytoplankton, epiphytic algae and various types of benthic algae that all contribute to this high productivity. The relative contribution of differ ...
... Estuaries and associated salt marshes are among the most productive habitats in the world. Primary producers including macrophytes and their detritus, phytoplankton, epiphytic algae and various types of benthic algae that all contribute to this high productivity. The relative contribution of differ ...
Ingredients for protist coexistence: competition, endosymbiosis and
... In this respect, it may be significant that P. bursaria hosts hundreds of cells of the green algae Chlorella vulgaris and may benefit from carbohydrates synthesised by its endosymbiont presumably in exchange of protection (Karakashian 1963; Pado 1965; Weis 1969). Although the interaction between P. bu ...
... In this respect, it may be significant that P. bursaria hosts hundreds of cells of the green algae Chlorella vulgaris and may benefit from carbohydrates synthesised by its endosymbiont presumably in exchange of protection (Karakashian 1963; Pado 1965; Weis 1969). Although the interaction between P. bu ...
ECOLOGICAL RESTORATION AND SUSTAINABLE
... It is a great honour for me to welcome in the name of the organizing committee, at the 7th European Conference in Ecological Restoration, placed under the auspices of the International Society of Ecological Restoration, chapter Europe. It is also a real pride for us to have been chosen to organize t ...
... It is a great honour for me to welcome in the name of the organizing committee, at the 7th European Conference in Ecological Restoration, placed under the auspices of the International Society of Ecological Restoration, chapter Europe. It is also a real pride for us to have been chosen to organize t ...
2010 7th SER Conference of the Society for Ecological
... It is a great honour for me to welcome in the name of the organizing committee, at the 7th European Conference in Ecological Restoration, placed under the auspices of the International Society of Ecological Restoration, chapter Europe. It is also a real pride for us to have been chosen to organize t ...
... It is a great honour for me to welcome in the name of the organizing committee, at the 7th European Conference in Ecological Restoration, placed under the auspices of the International Society of Ecological Restoration, chapter Europe. It is also a real pride for us to have been chosen to organize t ...
The role of fungal secondary metabolites in Collembola
... terrestrial biogeochemical cycles of carbon, nitrogen and phosphorus (Wardle 2002) and hence for plant growth and community structure (Hättenschwiler et al. 2005). Consequently, it determines plant growth and community structure (Wardle 2002; Bardgett 2005). The availability of macronutrients, such ...
... terrestrial biogeochemical cycles of carbon, nitrogen and phosphorus (Wardle 2002) and hence for plant growth and community structure (Hättenschwiler et al. 2005). Consequently, it determines plant growth and community structure (Wardle 2002; Bardgett 2005). The availability of macronutrients, such ...
Grosholz et al. 2009
... ecosystems, one in San Francisco Bay, California, and one in Willapa Bay, Washington. We compare and contrast the impacts of Spartina invasion on a range of processes, focusing primarily on benthic invertebrate communities and the sediment environment. Our work shows that the structure of the plant ...
... ecosystems, one in San Francisco Bay, California, and one in Willapa Bay, Washington. We compare and contrast the impacts of Spartina invasion on a range of processes, focusing primarily on benthic invertebrate communities and the sediment environment. Our work shows that the structure of the plant ...
Integrated Pest Management by Dale Bottrell
... generally more etfective and cheaper than either of these methods, and they require less fossil fuel energy than mechanical cultivators. Further, their use eliminates some of the problems commonly associated with mechanical cultivation-soil compaction, soil erosion, and soil moisture loss. Agricultu ...
... generally more etfective and cheaper than either of these methods, and they require less fossil fuel energy than mechanical cultivators. Further, their use eliminates some of the problems commonly associated with mechanical cultivation-soil compaction, soil erosion, and soil moisture loss. Agricultu ...
the hawaii home owner`s guide to termites
... a strict caste system. Every effort of each member is directed toward the common welfare and survival of the colony and is among the most sophisticated in the insect world. Each group has its own well-defined duties. They are either building, feeding, defending, or propagating which they carry out f ...
... a strict caste system. Every effort of each member is directed toward the common welfare and survival of the colony and is among the most sophisticated in the insect world. Each group has its own well-defined duties. They are either building, feeding, defending, or propagating which they carry out f ...
CBD Strategy and Action Plan
... Promoting administration and management of national forest including forest reserves and green corridors ..................................................................................................... 162 Promoting forest resource monitoring .................................................... ...
... Promoting administration and management of national forest including forest reserves and green corridors ..................................................................................................... 162 Promoting forest resource monitoring .................................................... ...
Regeneration from injury and resource allocation in sponges and
... secreting an underlying layer of calcium carbonate that envelopes organisms and sediments that may have fouled the lesion (FISHELSON, 1973). Macropolypal corals tend to regenerate from remnant corallites deeper in the coral that eventually re-establish contact with one another to form a continuous l ...
... secreting an underlying layer of calcium carbonate that envelopes organisms and sediments that may have fouled the lesion (FISHELSON, 1973). Macropolypal corals tend to regenerate from remnant corallites deeper in the coral that eventually re-establish contact with one another to form a continuous l ...
information - Society For Range Management
... Divide and Conquer: Developing riparian complex ecological site descriptions for southern Utah Sarah Quistberg* ...
... Divide and Conquer: Developing riparian complex ecological site descriptions for southern Utah Sarah Quistberg* ...
document - Dutch Caribbean | Biodiversity database
... the plant communities from a dry forest towards the current dominance of thorny bushes and cacti, and overgrazing has led to cascading effects through soil erosion. The subsequent reduction of several crucial ecological and economical functions such as local climate control and recreation, are start ...
... the plant communities from a dry forest towards the current dominance of thorny bushes and cacti, and overgrazing has led to cascading effects through soil erosion. The subsequent reduction of several crucial ecological and economical functions such as local climate control and recreation, are start ...