Benthic Macrofauna of the New York Bight, 1979-89
The benthic macrofauna of the New York Bight has been monitored extensively, primarily to determine trends over space and time in biological effects of waste inputs. Inthe present study, from 44 to 48 stations were sampled each summer from 1980-1985. Data from other Bight benthic studies are included to· extend the temporal coveragefrom 1979 to 1989. Numbers of species and amphipods per sample, taken as relatively sensitive indicators of environmental stress, showed consistent spatial patterns. Lowest values were found in the Christiaensen Basin and other inshore areas, and numbers increased toward the outermost shelf and Hudson Shelf Valley stations. There werestatistically significant decreases in species and amphipods at most stations from 1980 to 1985. (Preliminary data from a more recent study suggest numbers of species increased again between 1986 and 1989.) Cluster analysis of 1980-85 data indicated several distinct assemblages-sewage sludge dumpsite, sludge accumulation area, inner Shelf Valley, outer Shelf Valley, outer shelf-with little change over time. The "enriched" and "highly altered" assemblages in the Basin appear similar to those reported since sampling began there in 1968. No consistently defaunated areas have been found in any sampling programs over the past 20 years. On a gross level, therefore, recent faunal responses to any environmental changes are not evident, but the more sensitive measures used, i.e. numbers of species and amphipods, do indicate widespread recent effects. Causes of the faunal changes are not obvious; some possibilities, including increasing effects of sewagesludge or other waste inputs, natural factors, and sampling artifacts, are discussed. (PDF file contains 54 pages.)
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Format: | monograph biblioteca |
Language: | English |
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NOAA/National Marine Fisheries Service
1991
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Subjects: | Ecology, Fisheries, |
Online Access: | http://hdl.handle.net/1834/20504 |
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dig-aquadocs-1834-205042021-06-27T02:37:20Z Benthic Macrofauna of the New York Bight, 1979-89 Reid, Robert N. Radosh, David J. Frame, Ann B. Fromm, Steven A. Ecology Fisheries The benthic macrofauna of the New York Bight has been monitored extensively, primarily to determine trends over space and time in biological effects of waste inputs. Inthe present study, from 44 to 48 stations were sampled each summer from 1980-1985. Data from other Bight benthic studies are included to· extend the temporal coveragefrom 1979 to 1989. Numbers of species and amphipods per sample, taken as relatively sensitive indicators of environmental stress, showed consistent spatial patterns. Lowest values were found in the Christiaensen Basin and other inshore areas, and numbers increased toward the outermost shelf and Hudson Shelf Valley stations. There werestatistically significant decreases in species and amphipods at most stations from 1980 to 1985. (Preliminary data from a more recent study suggest numbers of species increased again between 1986 and 1989.) Cluster analysis of 1980-85 data indicated several distinct assemblages-sewage sludge dumpsite, sludge accumulation area, inner Shelf Valley, outer Shelf Valley, outer shelf-with little change over time. The "enriched" and "highly altered" assemblages in the Basin appear similar to those reported since sampling began there in 1968. No consistently defaunated areas have been found in any sampling programs over the past 20 years. On a gross level, therefore, recent faunal responses to any environmental changes are not evident, but the more sensitive measures used, i.e. numbers of species and amphipods, do indicate widespread recent effects. Causes of the faunal changes are not obvious; some possibilities, including increasing effects of sewagesludge or other waste inputs, natural factors, and sampling artifacts, are discussed. (PDF file contains 54 pages.) 2021-06-24T15:34:39Z 2021-06-24T15:34:39Z 1991 monograph http://hdl.handle.net/1834/20504 en NOAA Technical Report NMFS http://spo.nwr.noaa.gov/tr103.pdf application/pdf application/pdf NOAA/National Marine Fisheries Service http://aquaticcommons.org/id/eprint/2712 403 2011-09-29 18:30:56 2712 United States National Marine Fisheries Service |
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Ecology Fisheries Ecology Fisheries Reid, Robert N. Radosh, David J. Frame, Ann B. Fromm, Steven A. Benthic Macrofauna of the New York Bight, 1979-89 |
description |
The benthic macrofauna of the New York Bight has been monitored extensively, primarily to determine trends over space and time in biological effects of waste inputs. Inthe present study, from 44 to 48 stations were sampled each summer from 1980-1985. Data from other Bight benthic studies are included to· extend the temporal coveragefrom 1979 to 1989. Numbers of species and amphipods per sample, taken as relatively sensitive indicators of environmental stress, showed consistent spatial patterns. Lowest values were found in the Christiaensen Basin and other inshore areas, and numbers increased toward the outermost shelf and Hudson Shelf Valley stations. There werestatistically significant decreases in species and amphipods at most stations from 1980 to 1985. (Preliminary data from a more recent study suggest numbers of species increased again between 1986 and 1989.) Cluster analysis of 1980-85 data indicated several distinct assemblages-sewage sludge dumpsite, sludge accumulation area, inner Shelf Valley, outer Shelf Valley, outer shelf-with little change over time. The "enriched" and "highly altered" assemblages in the Basin appear similar to those reported since sampling began there in 1968. No consistently defaunated areas have been found in any sampling programs over the past 20 years. On a gross level, therefore, recent faunal responses to any environmental changes are not evident, but the more sensitive measures used, i.e. numbers of species and amphipods, do indicate widespread recent effects. Causes of the faunal changes are not obvious; some possibilities, including increasing effects of sewagesludge or other waste inputs, natural factors, and sampling artifacts, are discussed. (PDF file contains 54 pages.) |
format |
monograph |
topic_facet |
Ecology Fisheries |
author |
Reid, Robert N. Radosh, David J. Frame, Ann B. Fromm, Steven A. |
author_facet |
Reid, Robert N. Radosh, David J. Frame, Ann B. Fromm, Steven A. |
author_sort |
Reid, Robert N. |
title |
Benthic Macrofauna of the New York Bight, 1979-89 |
title_short |
Benthic Macrofauna of the New York Bight, 1979-89 |
title_full |
Benthic Macrofauna of the New York Bight, 1979-89 |
title_fullStr |
Benthic Macrofauna of the New York Bight, 1979-89 |
title_full_unstemmed |
Benthic Macrofauna of the New York Bight, 1979-89 |
title_sort |
benthic macrofauna of the new york bight, 1979-89 |
publisher |
NOAA/National Marine Fisheries Service |
publishDate |
1991 |
url |
http://hdl.handle.net/1834/20504 |
work_keys_str_mv |
AT reidrobertn benthicmacrofaunaofthenewyorkbight197989 AT radoshdavidj benthicmacrofaunaofthenewyorkbight197989 AT frameannb benthicmacrofaunaofthenewyorkbight197989 AT frommstevena benthicmacrofaunaofthenewyorkbight197989 |
_version_ |
1756077372957786112 |