Comparative ecosystem trophic structure of three U.S. mid-Atlantic estuaries
Quantitative networks of trophic exchanges offer the potential to compare food webs from neighboring ecosystems in order to ascertain whether large differences and similarities exist in trophic structure and function. Network analysis was invoked to compare the exchanges of carbon in 3 mid-Atlantic...
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Veröffentlicht in: | Marine ecology. Progress series (Halstenbek) 1997-01, Vol.161, p.239-254 |
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creator | Monaco, Mark E. Ulanowicz, Robert E. |
description | Quantitative networks of trophic exchanges offer the potential to compare food webs from neighboring ecosystems in order to ascertain whether large differences and similarities exist in trophic structure and function. Network analysis was invoked to compare the exchanges of carbon in 3 mid-Atlantic estuaries on the eastern U.S. coast: the Narragansett, Delaware, and Chesapeake Bays. Narragansett Bay exhibited the highest average annual rate of net primary production, followed by Delaware and Chesapeake Bays. Taken in combination, the analyses of cycling structures (magnitude of flows, average carbon cycle lengths), organization of carbon flows, system production:biomass ratios, and harvest rates all indicated that the Delaware and Chesapeake Bay ecosystems are more stressed than that of Narragansett Bay. To differentiate between the former two, a combination of measures of system efficiency, cycling structure, and food web connectivity was employed. The results indicated that Delaware Bay is currently less impacted and has potentially more ability to mitigate perturbations to its food web than does Chesapeake Bay. Overall, network analysis proved to be a suitable methodology for making inter-estuarine ecosystem comparisons, and for providing useful insights to natural resource managers in the assessment of estuarine trophic structure and status. |
doi_str_mv | 10.3354/meps161239 |
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Network analysis was invoked to compare the exchanges of carbon in 3 mid-Atlantic estuaries on the eastern U.S. coast: the Narragansett, Delaware, and Chesapeake Bays. Narragansett Bay exhibited the highest average annual rate of net primary production, followed by Delaware and Chesapeake Bays. Taken in combination, the analyses of cycling structures (magnitude of flows, average carbon cycle lengths), organization of carbon flows, system production:biomass ratios, and harvest rates all indicated that the Delaware and Chesapeake Bay ecosystems are more stressed than that of Narragansett Bay. To differentiate between the former two, a combination of measures of system efficiency, cycling structure, and food web connectivity was employed. The results indicated that Delaware Bay is currently less impacted and has potentially more ability to mitigate perturbations to its food web than does Chesapeake Bay. 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Progress series (Halstenbek)</title><description>Quantitative networks of trophic exchanges offer the potential to compare food webs from neighboring ecosystems in order to ascertain whether large differences and similarities exist in trophic structure and function. Network analysis was invoked to compare the exchanges of carbon in 3 mid-Atlantic estuaries on the eastern U.S. coast: the Narragansett, Delaware, and Chesapeake Bays. Narragansett Bay exhibited the highest average annual rate of net primary production, followed by Delaware and Chesapeake Bays. Taken in combination, the analyses of cycling structures (magnitude of flows, average carbon cycle lengths), organization of carbon flows, system production:biomass ratios, and harvest rates all indicated that the Delaware and Chesapeake Bay ecosystems are more stressed than that of Narragansett Bay. To differentiate between the former two, a combination of measures of system efficiency, cycling structure, and food web connectivity was employed. The results indicated that Delaware Bay is currently less impacted and has potentially more ability to mitigate perturbations to its food web than does Chesapeake Bay. Overall, network analysis proved to be a suitable methodology for making inter-estuarine ecosystem comparisons, and for providing useful insights to natural resource managers in the assessment of estuarine trophic structure and status.</description><subject>Brackish</subject><subject>Diet</subject><subject>Ecosystems</subject><subject>Estuaries</subject><subject>Fishery economics</subject><subject>Food webs</subject><subject>Marine</subject><subject>Marine ecosystems</subject><subject>Network analysis</subject><subject>Ocean fisheries</subject><subject>Primary productivity</subject><subject>Trophic levels</subject><issn>0171-8630</issn><issn>1616-1599</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNqN0E1Lw0AQBuBFFKzVi3chJw9C6n5v9liKX1DwoD2HzWZCUxo37mwE_70rFb16mhl4mBleQi4ZXQih5O0AIzLNuLBHZJYbXTJl7TGZUWZYWWlBT8kZ4o5SpqXRM7JehWF00aX-AwrwAT8xwVCkGMZt7wtMcfJpilCErkjbCFBsFi-LYujbcpn27i1lBJgmF3vAc3LSuT3CxU-dk8393evqsVw_PzytluvSS6ZSKRyVVmuwtuGe5gGa1opW0kZWEhxI0TSGW-aMbyrRWeGV41JxZahvfVeJObk-7B1jeJ_y-Xro0cM-_wNhwpoZbjRX_B-QUSOMyvDmAH0MiBG6eoz94OJnzWj9nWz9l2zGVwe8wxTir-SyUpZyK74AAHN1_g</recordid><startdate>19970101</startdate><enddate>19970101</enddate><creator>Monaco, Mark E.</creator><creator>Ulanowicz, Robert E.</creator><general>Inter-Research</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope><scope>7SN</scope><scope>7UA</scope><scope>C1K</scope></search><sort><creationdate>19970101</creationdate><title>Comparative ecosystem trophic structure of three U.S. mid-Atlantic estuaries</title><author>Monaco, Mark E. ; Ulanowicz, Robert E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-3a04966e99b2c0a04ebd93d40b484eae43bb7291a7cb83f93c5a2452570cdcf83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Brackish</topic><topic>Diet</topic><topic>Ecosystems</topic><topic>Estuaries</topic><topic>Fishery economics</topic><topic>Food webs</topic><topic>Marine</topic><topic>Marine ecosystems</topic><topic>Network analysis</topic><topic>Ocean fisheries</topic><topic>Primary productivity</topic><topic>Trophic levels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Monaco, Mark E.</creatorcontrib><creatorcontrib>Ulanowicz, Robert E.</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Ecology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Marine ecology. Progress series (Halstenbek)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Monaco, Mark E.</au><au>Ulanowicz, Robert E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparative ecosystem trophic structure of three U.S. mid-Atlantic estuaries</atitle><jtitle>Marine ecology. Progress series (Halstenbek)</jtitle><date>1997-01-01</date><risdate>1997</risdate><volume>161</volume><spage>239</spage><epage>254</epage><pages>239-254</pages><issn>0171-8630</issn><eissn>1616-1599</eissn><abstract>Quantitative networks of trophic exchanges offer the potential to compare food webs from neighboring ecosystems in order to ascertain whether large differences and similarities exist in trophic structure and function. Network analysis was invoked to compare the exchanges of carbon in 3 mid-Atlantic estuaries on the eastern U.S. coast: the Narragansett, Delaware, and Chesapeake Bays. Narragansett Bay exhibited the highest average annual rate of net primary production, followed by Delaware and Chesapeake Bays. Taken in combination, the analyses of cycling structures (magnitude of flows, average carbon cycle lengths), organization of carbon flows, system production:biomass ratios, and harvest rates all indicated that the Delaware and Chesapeake Bay ecosystems are more stressed than that of Narragansett Bay. To differentiate between the former two, a combination of measures of system efficiency, cycling structure, and food web connectivity was employed. The results indicated that Delaware Bay is currently less impacted and has potentially more ability to mitigate perturbations to its food web than does Chesapeake Bay. Overall, network analysis proved to be a suitable methodology for making inter-estuarine ecosystem comparisons, and for providing useful insights to natural resource managers in the assessment of estuarine trophic structure and status.</abstract><pub>Inter-Research</pub><doi>10.3354/meps161239</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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source | Inter-Research; JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
subjects | Brackish Diet Ecosystems Estuaries Fishery economics Food webs Marine Marine ecosystems Network analysis Ocean fisheries Primary productivity Trophic levels |
title | Comparative ecosystem trophic structure of three U.S. mid-Atlantic estuaries |
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