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Therefore, it can be advantageous for plants to "hedge their bets" in case of a drought by producing some seeds that germinate immediately and other seeds that lie dormant. Other examples of biological bet hedging include female multiple mating , [ 2 ] foraging behavior in bumble bees , [ 3 ] nutrient storage in rhizobia , [ 4 ] and bacterial ...
Contour plowing or contour farming is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour line furrows create a water break, reducing the formation of rills and gullies during heavy precipitation and allowing more time for the water to settle into the soil. [ 1 ]
A hedge or hedgerow is a line of closely spaced (3 feet or closer) shrubs and sometimes trees, planted and trained to form a barrier or to mark the boundary of an area, such as between neighbouring properties. Hedges that are used to separate a road from adjoining fields or one field from another, and are of sufficient age to incorporate larger ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
(pl.) aboiteaux A sluice or conduit built beneath a coastal dike, with a hinged gate or a one-way valve that closes during high tide, preventing salt water from flowing into the sluice and flooding the land behind the dike, but remains open during low tide, allowing fresh water precipitation and irrigation runoff to drain from the land into the sea; or a method of land reclamation which relies ...
Random contour plowing also becomes off contour but usually with the opposite effect on runoff, namely causing it to quickly run off ridges and concentrate in valleys. The limitations of the traditional system of soil conservation , with its "safe disposal" approach to farm water , was an important motivation to develop Keyline design.
A dead hedge used as a roadside boundary. A dead hedge is a barrier constructed from cut branches, saplings, and foliage. The material can be gathered from activities such as pruning or clearing, and in traditional forms of woodland management, [1] such as coppicing. Its ecological succession can be a beetle bank or hedge.
A good hedge reduces rainfall runoff by as much as 70% and sediment by as much as 90%. A hedgerow stays where it is planted and the sediment that is spread out behind the hedgerow gradually accumulates to form a long-lasting terrace. It is a low-cost, labor-intensive technology claimed to have a high benefit/cost ratio.