Deep-sea foraging pathways: an analysis of randomness and resource exploitation
The foraging paradigm of trace fossil theory has historically accorded random behavior to non-food-limited deposit-feeders and non-random behavior to food-limited feeders. A series of randomness measures derived from empirical modeling, simulation modeling, stochastic modeling and probability theory...
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Cambridge University Press (CUP)
1979
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Online Access: | http://dx.doi.org/10.1017/s0094837300006400 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300006400 |
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crcambridgeupr:10.1017/s0094837300006400 2024-09-15T17:46:23+00:00 Deep-sea foraging pathways: an analysis of randomness and resource exploitation Kitchell, Jennifer A. 1979 http://dx.doi.org/10.1017/s0094837300006400 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300006400 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Paleobiology volume 5, issue 2, page 107-125 ISSN 0094-8373 1938-5331 journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0094837300006400 2024-07-24T04:03:41Z The foraging paradigm of trace fossil theory has historically accorded random behavior to non-food-limited deposit-feeders and non-random behavior to food-limited feeders. A series of randomness measures derived from empirical modeling, simulation modeling, stochastic modeling and probability theory applied to foraging patterns observed in deep-sea bottom photographs from the Arctic and Antarctic yielded a behavioral continuum of increasing non-randomness. A linear regression of trace positions along the continuum to bathymetric data did not substantiate the optimal foraging efficiency-depth dependence model of trace fossil theory, except that all traces exhibited a greater optimization than that of simulated random foraging. It is hypothesized that optimization as evidenced by non-random foraging strategies represents maximization of the cost/benefit ratio of resource exploitation to risk of predation and that individual foraging patterns reflect an exploration response to the morphometry of a patchily distributed food resource. Differential predation and competition may account for the co-occurrence of random and non-random strategies within the same bathymetric zone. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Paleobiology 5 2 107 125 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
The foraging paradigm of trace fossil theory has historically accorded random behavior to non-food-limited deposit-feeders and non-random behavior to food-limited feeders. A series of randomness measures derived from empirical modeling, simulation modeling, stochastic modeling and probability theory applied to foraging patterns observed in deep-sea bottom photographs from the Arctic and Antarctic yielded a behavioral continuum of increasing non-randomness. A linear regression of trace positions along the continuum to bathymetric data did not substantiate the optimal foraging efficiency-depth dependence model of trace fossil theory, except that all traces exhibited a greater optimization than that of simulated random foraging. It is hypothesized that optimization as evidenced by non-random foraging strategies represents maximization of the cost/benefit ratio of resource exploitation to risk of predation and that individual foraging patterns reflect an exploration response to the morphometry of a patchily distributed food resource. Differential predation and competition may account for the co-occurrence of random and non-random strategies within the same bathymetric zone. |
format |
Article in Journal/Newspaper |
author |
Kitchell, Jennifer A. |
spellingShingle |
Kitchell, Jennifer A. Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
author_facet |
Kitchell, Jennifer A. |
author_sort |
Kitchell, Jennifer A. |
title |
Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
title_short |
Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
title_full |
Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
title_fullStr |
Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
title_full_unstemmed |
Deep-sea foraging pathways: an analysis of randomness and resource exploitation |
title_sort |
deep-sea foraging pathways: an analysis of randomness and resource exploitation |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0094837300006400 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300006400 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Paleobiology volume 5, issue 2, page 107-125 ISSN 0094-8373 1938-5331 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0094837300006400 |
container_title |
Paleobiology |
container_volume |
5 |
container_issue |
2 |
container_start_page |
107 |
op_container_end_page |
125 |
_version_ |
1810494470626476032 |