Distribution pattern of benthic invertebrates in Danish estuaries

The use of Taylor’s power law as a species-specific indicator of dispersion and behavior

Erik Kristensen, Matthieu Delefosse, Cintia Organo Quintana, Gary Thomas Banta, Hans Christian Petersen, Bent Jørgensen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The lack of a common statistical approach describing the distribution and dispersion pattern of marine benthic animals has often hampered the comparability among studies. The purpose of this study is therefore to apply
an alternative approach, Taylor's power law, to data on spatial and temporal distribution of 9 dominating benthic invertebrate species from two study areas, the estuaries Odense Fjord and Roskilde Fjord, Denmark. The slope (b) obtained fromthe power relationship of sample variance (s2) versusmean (μ) appears to be species-specific and independent of location and time. It ranges from a low of ~1 for large-bodied (>1 mg AFDW) species (e.g. Marenzelleria viridis, Nereis diversicolor) to a high of 1.6–1.9 for small-bodied (b1 mgAFDW) species
(e.g. Pygospio elegans and Tubificoides benedii). Accordingly, b is apparently a valuable species-specific dispersion index based on biological factors such as behavior and intraspecific interactions. Thus, at the examined spatial scale, the more intense intraspecific interactions (e.g. territoriality) cause less aggregated distribution patterns among large- than small-bodied invertebrates. The species-specific interactions seem sufficiently strong to override environmental influences (e.g. water depth and sediment type). The strong linear relationship between the slope b and intercept log(a) from the power relationship is remarkably similar for all surveys providing a common slope of−1.63 with the present sampling approach.We suggest that this relationship is an inherent characteristic of Taylor's power law, and that b as a dispersion index may be biased by e.g. sampling errorswhen this relationship is weak. The correlation strength between b and log(a) could therefore be envisioned as a data quality check.
OriginalsprogEngelsk
TidsskriftJournal of Sea Research
Vol/bind77
Sider (fra-til)70-78
Antal sider9
ISSN1385-1101
StatusUdgivet - 2013

Emneord

  • benthic fauna
  • population biology
  • marine ecology

Citer dette

Kristensen, Erik ; Delefosse, Matthieu ; Quintana, Cintia Organo ; Banta, Gary Thomas ; Petersen, Hans Christian ; Jørgensen, Bent. / Distribution pattern of benthic invertebrates in Danish estuaries : The use of Taylor’s power law as a species-specific indicator of dispersion and behavior. I: Journal of Sea Research. 2013 ; Bind 77. s. 70-78.
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title = "Distribution pattern of benthic invertebrates in Danish estuaries: The use of Taylor’s power law as a species-specific indicator of dispersion and behavior",
abstract = "The lack of a common statistical approach describing the distribution and dispersion pattern of marine benthic animals has often hampered the comparability among studies. The purpose of this study is therefore to applyan alternative approach, Taylor's power law, to data on spatial and temporal distribution of 9 dominating benthic invertebrate species from two study areas, the estuaries Odense Fjord and Roskilde Fjord, Denmark. The slope (b) obtained fromthe power relationship of sample variance (s2) versusmean (μ) appears to be species-specific and independent of location and time. It ranges from a low of ~1 for large-bodied (>1 mg AFDW) species (e.g. Marenzelleria viridis, Nereis diversicolor) to a high of 1.6–1.9 for small-bodied (b1 mgAFDW) species(e.g. Pygospio elegans and Tubificoides benedii). Accordingly, b is apparently a valuable species-specific dispersion index based on biological factors such as behavior and intraspecific interactions. Thus, at the examined spatial scale, the more intense intraspecific interactions (e.g. territoriality) cause less aggregated distribution patterns among large- than small-bodied invertebrates. The species-specific interactions seem sufficiently strong to override environmental influences (e.g. water depth and sediment type). The strong linear relationship between the slope b and intercept log(a) from the power relationship is remarkably similar for all surveys providing a common slope of−1.63 with the present sampling approach.We suggest that this relationship is an inherent characteristic of Taylor's power law, and that b as a dispersion index may be biased by e.g. sampling errorswhen this relationship is weak. The correlation strength between b and log(a) could therefore be envisioned as a data quality check.",
keywords = "benthic fauna, population biology, marine ecology",
author = "Erik Kristensen and Matthieu Delefosse and Quintana, {Cintia Organo} and Banta, {Gary Thomas} and Petersen, {Hans Christian} and Bent J{\o}rgensen",
year = "2013",
language = "English",
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Distribution pattern of benthic invertebrates in Danish estuaries : The use of Taylor’s power law as a species-specific indicator of dispersion and behavior. / Kristensen, Erik; Delefosse, Matthieu; Quintana, Cintia Organo; Banta, Gary Thomas; Petersen, Hans Christian; Jørgensen, Bent.

I: Journal of Sea Research, Bind 77, 2013, s. 70-78.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Distribution pattern of benthic invertebrates in Danish estuaries

T2 - The use of Taylor’s power law as a species-specific indicator of dispersion and behavior

AU - Kristensen, Erik

AU - Delefosse, Matthieu

AU - Quintana, Cintia Organo

AU - Banta, Gary Thomas

AU - Petersen, Hans Christian

AU - Jørgensen, Bent

PY - 2013

Y1 - 2013

N2 - The lack of a common statistical approach describing the distribution and dispersion pattern of marine benthic animals has often hampered the comparability among studies. The purpose of this study is therefore to applyan alternative approach, Taylor's power law, to data on spatial and temporal distribution of 9 dominating benthic invertebrate species from two study areas, the estuaries Odense Fjord and Roskilde Fjord, Denmark. The slope (b) obtained fromthe power relationship of sample variance (s2) versusmean (μ) appears to be species-specific and independent of location and time. It ranges from a low of ~1 for large-bodied (>1 mg AFDW) species (e.g. Marenzelleria viridis, Nereis diversicolor) to a high of 1.6–1.9 for small-bodied (b1 mgAFDW) species(e.g. Pygospio elegans and Tubificoides benedii). Accordingly, b is apparently a valuable species-specific dispersion index based on biological factors such as behavior and intraspecific interactions. Thus, at the examined spatial scale, the more intense intraspecific interactions (e.g. territoriality) cause less aggregated distribution patterns among large- than small-bodied invertebrates. The species-specific interactions seem sufficiently strong to override environmental influences (e.g. water depth and sediment type). The strong linear relationship between the slope b and intercept log(a) from the power relationship is remarkably similar for all surveys providing a common slope of−1.63 with the present sampling approach.We suggest that this relationship is an inherent characteristic of Taylor's power law, and that b as a dispersion index may be biased by e.g. sampling errorswhen this relationship is weak. The correlation strength between b and log(a) could therefore be envisioned as a data quality check.

AB - The lack of a common statistical approach describing the distribution and dispersion pattern of marine benthic animals has often hampered the comparability among studies. The purpose of this study is therefore to applyan alternative approach, Taylor's power law, to data on spatial and temporal distribution of 9 dominating benthic invertebrate species from two study areas, the estuaries Odense Fjord and Roskilde Fjord, Denmark. The slope (b) obtained fromthe power relationship of sample variance (s2) versusmean (μ) appears to be species-specific and independent of location and time. It ranges from a low of ~1 for large-bodied (>1 mg AFDW) species (e.g. Marenzelleria viridis, Nereis diversicolor) to a high of 1.6–1.9 for small-bodied (b1 mgAFDW) species(e.g. Pygospio elegans and Tubificoides benedii). Accordingly, b is apparently a valuable species-specific dispersion index based on biological factors such as behavior and intraspecific interactions. Thus, at the examined spatial scale, the more intense intraspecific interactions (e.g. territoriality) cause less aggregated distribution patterns among large- than small-bodied invertebrates. The species-specific interactions seem sufficiently strong to override environmental influences (e.g. water depth and sediment type). The strong linear relationship between the slope b and intercept log(a) from the power relationship is remarkably similar for all surveys providing a common slope of−1.63 with the present sampling approach.We suggest that this relationship is an inherent characteristic of Taylor's power law, and that b as a dispersion index may be biased by e.g. sampling errorswhen this relationship is weak. The correlation strength between b and log(a) could therefore be envisioned as a data quality check.

KW - benthic fauna

KW - population biology

KW - marine ecology

M3 - Journal article

VL - 77

SP - 70

EP - 78

JO - Journal of Sea Research

JF - Journal of Sea Research

SN - 1385-1101

ER -