Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations
In nature, many biota exhibit recognisable spatial groupings, commonly termed "clumps" or "patches" (Hutchinson 1953; Diggle 1983; Wilson 1978). Attempts to devise measures of such aggregation are usually based on statistically determining the frequency distributions of selected organism parameters...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2024
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613387610914816 |
|---|---|
| access_status_str | Open Access |
| author | Miller, Denzil George Maxwell |
| author2 | Field, John G |
| author_browse | Field, John G Miller, Denzil George Maxwell |
| author_facet | Field, John G Miller, Denzil George Maxwell |
| author_sort | Miller, Denzil George Maxwell |
| collection | Thesis |
| description | In nature, many biota exhibit recognisable spatial groupings, commonly termed "clumps" or "patches" (Hutchinson 1953; Diggle 1983; Wilson 1978). Attempts to devise measures of such aggregation are usually based on statistically determining the frequency distributions of selected organism parameters (Morisita 1959; Pielou 1977; Okubo 1980). In their field study of the spatial distribution of some 102 species (ranging from protozoa to humans), Taylor et al. (1979) concluded that such data were on average significantly more clumped than random. Since theoretically derived contagious distributions are often fitted to observed frequency distributions of this kind (Bliss 1971), the underlying spatial patterns are therefore usually concluded to be "patchy" (i.e. the organism is unevenly distributed in space). This, however, does not allow for concrete conclusions to be drawn about the underlying mechanism(s) inducing the observed distribution(s) and provides little more than sample statistics for, or at best a static picture of, the spatial pattern of the organism(s) concerned (Okubo 1980). Fmihermore, unless patches are essentially discrete their resulting distributions are often difficult to discern objectively (Skellam 1952; Waters and Henson 1959). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/40566 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:35:20.741Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/40566 The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations Miller, Denzil George Maxwell Field, John G Zoology In nature, many biota exhibit recognisable spatial groupings, commonly termed "clumps" or "patches" (Hutchinson 1953; Diggle 1983; Wilson 1978). Attempts to devise measures of such aggregation are usually based on statistically determining the frequency distributions of selected organism parameters (Morisita 1959; Pielou 1977; Okubo 1980). In their field study of the spatial distribution of some 102 species (ranging from protozoa to humans), Taylor et al. (1979) concluded that such data were on average significantly more clumped than random. Since theoretically derived contagious distributions are often fitted to observed frequency distributions of this kind (Bliss 1971), the underlying spatial patterns are therefore usually concluded to be "patchy" (i.e. the organism is unevenly distributed in space). This, however, does not allow for concrete conclusions to be drawn about the underlying mechanism(s) inducing the observed distribution(s) and provides little more than sample statistics for, or at best a static picture of, the spatial pattern of the organism(s) concerned (Okubo 1980). Fmihermore, unless patches are essentially discrete their resulting distributions are often difficult to discern objectively (Skellam 1952; Waters and Henson 1959). 2024-10-10T10:45:52Z 2024-10-10T10:45:52Z 1994 2024-07-12T07:22:46Z Thesis / Dissertation Doctoral PhD http://hdl.handle.net/11427/40566 eng application/pdf Department of Biological Sciences Faculty of Science |
| spellingShingle | Zoology Miller, Denzil George Maxwell The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| thesis_degree_str | Doctoral |
| title | The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| title_full | The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| title_fullStr | The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| title_full_unstemmed | The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| title_short | The spatial distribution of Antarctic krill (Euphausia superba Dana) aggregations |
| title_sort | spatial distribution of antarctic krill euphausia superba dana aggregations |
| topic | Zoology |
| url | http://hdl.handle.net/11427/40566 |
| work_keys_str_mv | AT millerdenzilgeorgemaxwell thespatialdistributionofantarctickrilleuphausiasuperbadanaaggregations AT millerdenzilgeorgemaxwell spatialdistributionofantarctickrilleuphausiasuperbadanaaggregations |