Skip to Content.
Sympa Menu

permaculture - [permaculture] Biotope vs. "ecological niche"

permaculture@lists.ibiblio.org

Subject: permaculture

List archive

Chronological Thread  
  • From: "Lawrence F. London, Jr." <venaurafarm@bellsouth.net>
  • To: permaculture@lists.ibiblio.org
  • Subject: [permaculture] Biotope vs. "ecological niche"
  • Date: Sat, 24 Oct 2009 22:52:01 -0400


When creating a permaculture design for a site how important would it be to identify and document the ecology of the site in relation to the ecology of the region in which it is located as well as completing various inventories, plant, microbe, water, drainage,
soil, animal, slopes, geological features, microclimates, weather patterns, etc.? It would seem to be easy to create the inventories but
it would also be important to tie every element together, identifying its role in the local ecosystem, i.e. what belongs there and, with an eye toward adding species, what doesn't, like truly invasive, ecologically damaging species. Combining these major elements for the "good of the whole" in an ecological sense would make sense. Important considerations would be nutrient and water cycling within the site itself, stacked functions, earthworks and landforms even "terraforming"
(I did this to some degree with a loader and tractor - altering the grade on several large land areas, pond construction and berm and swale construction using fill from the pond excavation and more - it was a success almost without flaw and provided me with enhanced sites for raised bed market gardens - ).

You can have on site.......
1) human habitation
2) orchard, fruit, berry and nut
3) herb (complementary, biocontrol, habitat, culinary and medicinal)
4) fiber, forage, biomass, fuel, biofuel
5) vegetables
6) plantings for microclimates, hedgerow, windrow, shade, windbreaks
7) habitat and wildlife food plantings
8) water and nutritional catchment plantings
.....but it would seem ideal to locate the above major elements in relation to one another in a way that their survival needs will mesh and be met within an evolving common ecology and in areas where they will mesh with the natural, preexisting ecology of the site.

Biotope vs. "ecological niche"

How are they similar or different?

Ecological niche
From Wikipedia, the free encyclopedia

In ecology, a niche (pronounced /?ni??/ or /?n?t?/)[1] is a term describing the relational position of a species or population in its ecosystem to each other; e.g. a dolphin could potentially be in another ecological niche from one that travels in a different school if the members of these schools utilize significantly different food resources and foraging methods.[1] A shorthand definition of niche is how an organism makes a living. The ecological niche describes how an organism or population responds to the distribution of resources and competitors (e.g., by growing when resources are abundant, and when predators, parasites and pathogens are scarce) and how it in turn alters those same factors (e.g., limiting access to resources by other organisms, acting as a food source for predators and a consumer of prey).[2]

Wikipedia:
"Biotope is an area of uniform environmental conditions providing a living place for a specific assemblage of plants and animals. Biotope is almost synonymous with the term habitat, but while the subject of a habitat is a species or a population, the subject of a biotope is a biological community.[1]" ----->
(Biological Community)
Biocoenosis
From Wikipedia, the free encyclopedia
A biocoenosis (alternatively, biocoenose or biocenose ), termed by Karl Möbius in 1877, describes all the interacting organisms living together in a specific habitat (or biotope). Biotic community , biological community, and ecological community are more common synonyms of biocenosis, all of which represent the same concepts. Three related descriptors are zoocoenosis for the faunal community, phytocoenosis for the floral community and microbiocoenosis for the microbial community within an ecosystem.[1] The extent or geographical area of a biocenose is limited only by the requirement of a more or less uniform species composition.

An ecosystem, as originally defined by Tansley (1935), is a biotic community (or biocoenosis) along with its physical environment (or biotope as defined by many known ecologists).

The importance of the biocoenosis concept in ecology is its emphasis on the interrelationships among species in a geographical area. These interactions are as important as the physical factors to which each species is adapted and responding. In a very real sense, it is the specific biological community or biocoenosis that is adapted to conditions that prevail in a given place.

Biotic communities may be of varying sizes, and larger ones may contain smaller ones. The interactions between species are especially evident in food or feeding relationships. Therefore, a practical method of delineating biotic communities is to map the food network to identify which species feed upon which others and then determine the system boundary as the one that can be drawn through the fewest consumption links relative to the number of species within the boundary.

I guess this answers my question; an ecological niche is simply a defined ecosystem:

Ecosystem
From Wikipedia, the free encyclopedia
Jump to: navigation, search
The High Peaks Wilderness Area in the 6,000,000-acre (2,400,000 ha) Adirondack Park is an example of a diverse ecosystem.

An ecosystem is a system of interdependent organisms which share the same habitat, in an area functioning together with all of the physical (abiotic) factors of the environment. Ecosystems can be permanent or temporary. Ecosystems usually form a number of food webs. [1]

The term ecosystem was coined in 1930 by Roy Clapham to mean the combined physical and biological components of an environment. British ecologist Arthur Tansley later refined the term, describing it as "The whole system,… including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment".[2] Tansley regarded ecosystems not simply as natural units, but as mental isolates.[2] Tansley later[3] defined the spatial extent of ecosystems using the term ecotope.

Central to the ecosystem concept is the idea that living organisms interact with every other element in their local environment. Eugene Odum, a founder of ecology, stated: "Any unit that includes all of the organisms (ie: the "community") in a given area interacting with the physical environment so that a flow of energy leads to clearly defined trophic structure, biotic diversity, and material cycles (ie: exchange of materials between living and nonliving parts) within the system is an ecosystem."[4] The human ecosystem concept is then grounded in the deconstruction of the human/nature dichotomy and the premise that all species are ecologically integrated with each other, as well as with the abiotic constituents of their biotope.

I began reading at the entry for Biome, which I was curious about, in Wikipedia - this led to needing definitions for a number of terms referenced in the article.

Biome
From Wikipedia
Biomes
Terrestrial biomes
Tundra
Taiga/boreal forests
Montane grasslands and shrublands
Temperate coniferous forests
Tropical and subtropical coniferous forests
Temperate broadleaf and mixed forests
Mediterranean forests, woodlands, and scrub
Tropical and subtropical moist broadleaf forests
Tropical and subtropical dry broadleaf forests
Temperate grasslands, savannas, and shrublands
Tropical and subtropical grasslands, savannas, and shrublands
Deserts and xeric shrublands
Flooded grasslands and savannas
Riparian
Wetland
Aquatic biomes
Pond
Littoral/intertidal zone
Mangrove forests
Kelp forest
Coral reef
Neritic zone
Continental shelf
Pelagic zone
Benthic zone
Hydrothermal vents
Cold seeps
Pack ice
Other biomes
Endolithic zone

Biome are climatically and geographically defined areas of ecologically similar climatic conditions such as communities of plants, animals, and soil organisms,[1] and are often referred to as ecosystems. Biomes are defined by factors such as plant structures (such as trees, shrubs, and grasses), leaf types (such as broadleaf and needleleaf), plant spacing (forest, woodland, savanna), and climate. Unlike ecozones, biomes are not defined by genetic, taxonomic, or historical similarities. Biomes are often identified with particular patterns of ecological succession and climax vegetation (quasi-equilibrium state of the local ecosystem). An ecosystem has many biotopes and a biome is a major habitat type. A major habitat type, however, is a compromise, as it has an intrinsic inhomogeneity.

The biodiversity characteristic of each biome, especially the diversity of fauna and subdominant plant forms, is a function of abiotic factors and the biomass productivity of the dominant vegetation. In terrestrial biomes, species diversity tends to correlate positively with net primary productivity, moisture availability, and temperature.[2]

Ecoregions are grouped into both biomes and ecozones.

A fundamental classification of biomes is into:

1. Terrestrial (land) biomes
2. Freshwater biomes
3. Marine biomes







Archive powered by MHonArc 2.6.24.

Top of Page