8 Conflicts over biodiversity
... systems. Therefore, ultimately most other terrestrial organisms, plants and through them animals, rely upon them. The extent to which the diversity of these useful organisms is being depleted is, except in very small study areas, virtually impossible to gauge. The effects of their depletion, however ...
... systems. Therefore, ultimately most other terrestrial organisms, plants and through them animals, rely upon them. The extent to which the diversity of these useful organisms is being depleted is, except in very small study areas, virtually impossible to gauge. The effects of their depletion, however ...
Chapter 6: Biological Resources and Biodiversity of Dutchess
... because some species avoid edges—such as the edge of a wooded area or the edge of a grassland area—while other species prefer to occupy edges. In general, our current land use patterns include roads, residential neighborhoods, and commercial developments, which tend to increase abundance of edges an ...
... because some species avoid edges—such as the edge of a wooded area or the edge of a grassland area—while other species prefer to occupy edges. In general, our current land use patterns include roads, residential neighborhoods, and commercial developments, which tend to increase abundance of edges an ...
North Carolina`s native plants provide well
... seedheads, and difficulty in mowing. It is best used on roadsides where appearance is not a concern and low maintenance is the rule. Warm-season grasses grow best in the summer, go dormant in the fall at the first heavy frost, turn brown, and then green up slowly the following spring. For this reaso ...
... seedheads, and difficulty in mowing. It is best used on roadsides where appearance is not a concern and low maintenance is the rule. Warm-season grasses grow best in the summer, go dormant in the fall at the first heavy frost, turn brown, and then green up slowly the following spring. For this reaso ...
moving towards ecological farming
... recovery of wild bee populations and to maintain maximum pollination services to crops and wild plants. It is estimated that, for each additional 10% increase in the amount of high-quality bee habitats in a landscape, wild bee abundance and species richness may increase on average by 37% (Kennedy et ...
... recovery of wild bee populations and to maintain maximum pollination services to crops and wild plants. It is estimated that, for each additional 10% increase in the amount of high-quality bee habitats in a landscape, wild bee abundance and species richness may increase on average by 37% (Kennedy et ...
Academic Advisors Environmental and Sustainability Sciences (ESS
... One major thread of my research focuses on the interactions between poverty reduction and environmental management in rural areas of developing countries, with an emphasis on modeling and policy related to coupled human and natural systems in the low-income tropics. AEM 2000: Contemporary Controvers ...
... One major thread of my research focuses on the interactions between poverty reduction and environmental management in rural areas of developing countries, with an emphasis on modeling and policy related to coupled human and natural systems in the low-income tropics. AEM 2000: Contemporary Controvers ...
MOVING TOWARDS ECOLOGICAL FARMING
... recovery of wild bee populations and to maintain maximum pollination services to crops and wild plants. It is estimated that, for each additional 10% increase in the amount of high-quality bee habitats in a landscape, wild bee abundance and species richness may increase on average by 37% (Kennedy et ...
... recovery of wild bee populations and to maintain maximum pollination services to crops and wild plants. It is estimated that, for each additional 10% increase in the amount of high-quality bee habitats in a landscape, wild bee abundance and species richness may increase on average by 37% (Kennedy et ...
Short-term changes of protozoan control on autotrophic
... (Stockner and Antia, 1986; Stockner, 1988, 1991; Weisse, 1993). Unlike heterotrophic pelagic bacteria, autotrophic picocyanobacteria have received little attention in terms of their quantitative importance as a possible carbon source for protozoans (Stockner, 1991; Weisse, 1993, and references there ...
... (Stockner and Antia, 1986; Stockner, 1988, 1991; Weisse, 1993). Unlike heterotrophic pelagic bacteria, autotrophic picocyanobacteria have received little attention in terms of their quantitative importance as a possible carbon source for protozoans (Stockner, 1991; Weisse, 1993, and references there ...
fur_rpt16
... Their primary concern appears to be their sense of a lack of demand, but this fails to consider that low demand may be a result of lack of knowledge among hunters that such opportunity even exists in addition to the high cost of an individual permit (~ $100); if bobcat/otter trappers had to purchase ...
... Their primary concern appears to be their sense of a lack of demand, but this fails to consider that low demand may be a result of lack of knowledge among hunters that such opportunity even exists in addition to the high cost of an individual permit (~ $100); if bobcat/otter trappers had to purchase ...
The distribution of deer biomass in North America supports the
... between deer density and AE south of the wolf range, considering that I did not correct for factors such as areas of urbanization, agricultural lands, and nature of farm crops, which all influence deer abundance. It is also worth noting that deer behave like the rest of North American mammals, their ...
... between deer density and AE south of the wolf range, considering that I did not correct for factors such as areas of urbanization, agricultural lands, and nature of farm crops, which all influence deer abundance. It is also worth noting that deer behave like the rest of North American mammals, their ...
Woodlands - Landuse - Conservation Management Networks
... cover of less than 30% and usually less than 30m in height. White box usually follows this definition, although in areas previously cleared and regenerated it may have a more dense forest structure. Woodland trees usually have a spreading branch appearance, different to the usual straight trunk and ...
... cover of less than 30% and usually less than 30m in height. White box usually follows this definition, although in areas previously cleared and regenerated it may have a more dense forest structure. Woodland trees usually have a spreading branch appearance, different to the usual straight trunk and ...
Semester 1 Exam Review Sheet
... I can describe the effects of the various fishing method: trawler fishing, purse-seine fishing, longlining, and drift-net fishing. I can define fishprint. I can summarize the story of jellyfish invasions. I can define keystone species. I can explain the purpose of marine reserves. I can distinguish ...
... I can describe the effects of the various fishing method: trawler fishing, purse-seine fishing, longlining, and drift-net fishing. I can define fishprint. I can summarize the story of jellyfish invasions. I can define keystone species. I can explain the purpose of marine reserves. I can distinguish ...
LINKING THE BROWN AND GREEN: NUTRIENT TRANSFORMATION J L. B
... that prey-derived nitrogen had in fact moved through the food web, we also dried and weighed all Fletcherimyia larvae at the end of the experiment, ground them individually, and analyzed them for 15N abundance (Fletcherimyia larvae in the 15N-NH4NO3 treatment were not measured because they had crawl ...
... that prey-derived nitrogen had in fact moved through the food web, we also dried and weighed all Fletcherimyia larvae at the end of the experiment, ground them individually, and analyzed them for 15N abundance (Fletcherimyia larvae in the 15N-NH4NO3 treatment were not measured because they had crawl ...
Progress in wetland restoration ecology
... rates are similar to those of reference sites, but N accumulation rates are higher, thus C:N ratios have declined over time. Box 2. Hydrological considerations are basic to wetland restoration It is widely recognized that hydrological conditions provide the basic control of wetland structure and fun ...
... rates are similar to those of reference sites, but N accumulation rates are higher, thus C:N ratios have declined over time. Box 2. Hydrological considerations are basic to wetland restoration It is widely recognized that hydrological conditions provide the basic control of wetland structure and fun ...
Determinants of the detrital arthropod community structure: the
... resources are accessible (Sanders et al. 2007, Stringer et al. 2007). Small-scale variation in temperature within a single site can also drive spatial variation in rates of activity and in the composition and abundance of a variety of arthropod groups (Niemela et al. 1996, Cerdá et al. 1998). For ex ...
... resources are accessible (Sanders et al. 2007, Stringer et al. 2007). Small-scale variation in temperature within a single site can also drive spatial variation in rates of activity and in the composition and abundance of a variety of arthropod groups (Niemela et al. 1996, Cerdá et al. 1998). For ex ...
Perennial habitat fragments, parasitoid diversity and
... of pests. Semi-wild perennial vegetation may provide critical habitat for mobile arthropods supporting ecosystem services and sustainable agriculture. 2. We sampled tachinid parasitoids, an important taxon for biological control of vegetable pests, in 35 organic farm fields situated within a mosaic ...
... of pests. Semi-wild perennial vegetation may provide critical habitat for mobile arthropods supporting ecosystem services and sustainable agriculture. 2. We sampled tachinid parasitoids, an important taxon for biological control of vegetable pests, in 35 organic farm fields situated within a mosaic ...
Discussion on Rainwater Utilization in Southern Mountain Area of Jinan
... autumn plastic film covering soil and conserving moisture, plastic cover greenhouse efficient rainwater utilization technology which combined with irrigation. The membrane covering and membrane-side planting techniques named superposition of the southern mountain-site use of rainwater collection, wh ...
... autumn plastic film covering soil and conserving moisture, plastic cover greenhouse efficient rainwater utilization technology which combined with irrigation. The membrane covering and membrane-side planting techniques named superposition of the southern mountain-site use of rainwater collection, wh ...
Kelp Beds: Importance and Dynamics By
... Canopy Kelps blocks sunlight from coming through. The dense Stipitate Kelps darkens the middle. ...
... Canopy Kelps blocks sunlight from coming through. The dense Stipitate Kelps darkens the middle. ...
Tropical Marine Biology Productivity and the Coral Symbiosis
... • base of reef productivity • energy source for reef building • Huge ATP demand ...
... • base of reef productivity • energy source for reef building • Huge ATP demand ...
10/4/06 version
... much of this was due to the obvious increase in light due to removal of the liana canopy. Like ...
... much of this was due to the obvious increase in light due to removal of the liana canopy. Like ...
chapt13_lecture
... resources such as oil and natural gas. For this reason, countries wanted a way to protect these resources from exploitation by other countries. In the 1950’s, the United Nations agreed that each country shall have control over the marine resources out to 200 nautical miles off their coast – this inc ...
... resources such as oil and natural gas. For this reason, countries wanted a way to protect these resources from exploitation by other countries. In the 1950’s, the United Nations agreed that each country shall have control over the marine resources out to 200 nautical miles off their coast – this inc ...
Biodiversity and Ecosystem Functioning
... aquaculture and other managed ecosystems. The diversity of these managed ecosystems is often low, and species composition very different, compared with those of the natural systems they have replaced (Figure 3). What are the consequences of such declines in biodiversity and how might they affect hum ...
... aquaculture and other managed ecosystems. The diversity of these managed ecosystems is often low, and species composition very different, compared with those of the natural systems they have replaced (Figure 3). What are the consequences of such declines in biodiversity and how might they affect hum ...
Trait selection during food web assembly
... Both formulations lead to the same effective conversion efficiency since in model 3 the production of one unit of consumer requires 1/εj units of the resource, while in model 2, species produce εj unit of biomass per unit of resource consumed. Then this distinction seems trivial, but since we expect ...
... Both formulations lead to the same effective conversion efficiency since in model 3 the production of one unit of consumer requires 1/εj units of the resource, while in model 2, species produce εj unit of biomass per unit of resource consumed. Then this distinction seems trivial, but since we expect ...
Non-native invasive earthworms as agents of change in northern temperate forests REVIEWS
... invasion. Carbon loss of around 600 kg per hectare per year for a period of 14 years was reported for mixed hardwood forests in Minnesota (Alban and Berry 1994), and of 28% of total surface soil C for sugar maple (Acer saccharum) forests in the northeastern US (Bohlen et al. 2004b). Such losses occu ...
... invasion. Carbon loss of around 600 kg per hectare per year for a period of 14 years was reported for mixed hardwood forests in Minnesota (Alban and Berry 1994), and of 28% of total surface soil C for sugar maple (Acer saccharum) forests in the northeastern US (Bohlen et al. 2004b). Such losses occu ...
Food webs: reconciling the structure and function of biodiversity
... nutrients through ecological systems [6,7]. Whereas community ecology tends to be reductionist, concentrating largely on processes driven by individuals, populations, or species, ecosystem research often takes a more holistic, systems approach. It remains tractable by aggregating species into broad ...
... nutrients through ecological systems [6,7]. Whereas community ecology tends to be reductionist, concentrating largely on processes driven by individuals, populations, or species, ecosystem research often takes a more holistic, systems approach. It remains tractable by aggregating species into broad ...
Available Benthic Energy Coefficient (ABEC): a - Archimer
... determines the carrying capacity (hereafter called the ‘trophic carrying capacity’) by comparing fish ...
... determines the carrying capacity (hereafter called the ‘trophic carrying capacity’) by comparing fish ...