Image
from article Marine fisheries
Fish to market. Fish is an important animal protein consumed by humans. (Credit: Vl_K/Alamy Stock Photo)
Search Results
Search Results
Refine this search
Search result paging links
742 results
Image
from article Marine fisheries
Concept of maximum sustainable yield (MSY). (a) Catch and revenue and cost versus fishing effort. (b) Stock biomass versus fishing effort. In a developing fishery, catch increases in relation to fishing effort. At an intermediate level of effort and…
Image
from article Marine fisheries
Concept of maximizing yield per recruit (YPRmax). Yield per recruit increases as fishing mortality (or effort) increases until a maximum is reached, beyond which increases in effort result in declining YPR as the stock is overfished. Biological…
Image
from article Salt marsh
Salt marsh in Louisiana. Green plants in brackish water are observed in the foreground, whereas the ocean is seen in the background. (Credit: Ryan Hagerty/U.S. Fish and Wildlife Service)
Image
from article Salt marsh
California cordgrass (Spartina foliosa), a dominant salt-marsh plant, growing in the Tijuana Slough National Wildlife Refuge (located in southern California). (Credit: Lisa Cox/U.S. Fish and Wildlife Service)
Image
from article Salt marsh
An intertidal salt-marsh habitat on the Tijuana Slough National Wildlife Refuge (located in southern California). This habitat is an extremely diverse and productive ecosystem, filled with unique organisms. (Credit: Lisa Cox/U.S. Fish and Wildlife…
Image
from article Soil degradation
Soil degradation as a result of erosion in New Brunswick, Canada. (Credit: canadabrian/Alamy)
Image
from article Soil degradation
A pseudo-colored scanning electron micrograph (SEM) of Rhodococcus rhodochrous fermentation cells. Rhodococcus rhodochrous can degrade a diverse array of aromatic pollutants, including quinoline, pyridine, catechol, benzoate, and protocatechuic…
Image
from article Soil degradation
Surface water runoff can erode soils. In this case, the runoff from a rainstorm is eroding the soil of a cornfield. In addition, farm fertilizers and other potential pollutants are included in the runoff, often creating an environmentally toxic…
Image
from article Tropical forest
Tropical rainforest on Brunei. (Credit: Rodney Keenan)
