Mollusk Assemblages As Records of Past and Present Ecological Status

Dietl, Gregory P.; Durham, Stephen R.; Smith, Julian F.; Tweitmann, Annalee

doi:10.3389/fmars.2016.00169

Cited by 23 publications

(30 citation statements)

References 45 publications

(86 reference statements)

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“…• Ecological quality status (EcoQS) calculated with only mollusks will tend to underestimate low EcoQS and overestimate high EcoQS communities (unless corrected; see Dietl et al 2016). Dietl et al 2016 Proportion of living community that is mollusks…”

Section: Illustrative Referencesmentioning

confidence: 99%

“…• When mollusks compose a small proportion of the community, the correlation between mollusk-only and whole-community EcoQS weakens. Dietl et al 2016 Preservation of species abundance…”

Section: Illustrative Referencesmentioning

confidence: 99%

“…In contrast, taxon-free benthic indices (e.g., Karr 1981, 1991; Kerans and Karr 1994; Borja et al 2000; Simboura and Zenetos 2002) are based in organismal biology (e.g., life histories and sensitivities to environmental factors; Schaeffer et al 1985; Borja et al 2000; Simboura and Zenetos 2002; Adakole and Anunne 2003; Bellinger et al 2006; Sutherland et al 2007; Hess et al 2020), leading to a more direct stressor–response relationship and a corresponding increase in the power to detect eutrophication (or other types of disturbances; Borja et al 2015). As such, integrating geohistorical data with taxon-free benthic indices (e.g., Dietl et al 2016) may be a fruitful opportunity to increase the salience of geohistorical data in a rapidly changing Anthropocene world (Dietl et al 2016; Leshno et al 2016; Tweitmann and Dietl 2018; Caswell et al 2019).…”

Section: An Adaptable Live–dead Approach For a Changing Worldmentioning

confidence: 99%

“…Among the many metrics that have been developed, the AZTI Marine Biotic Index (AMBI; Borja et al 2000) has been one of the most widely used, including in the United States (e.g., Gillett et al 2015; Pelletier et al 2018; Tweitmann and Dietl 2018)—now facilitated more readily by the expansion of the software's species list to include species of North and South America. Dietl et al (2016) demonstrated that the results of AMBI for the entirety of the living benthic community (i.e., annelids, arthropods, mollusks) can frequently be reproduced using solely the molluscan component of the community. Examining the benthic community data from 12 studies, Dietl et al (2016) calculated AMBI with only mollusks, emulating the type of data expected to be found in a death assemblage, and compared the results with AMBI values calculated from the whole macrobenthic invertebrate community.…”

Section: An Adaptable Live–dead Approach For a Changing Worldmentioning

confidence: 99%

“…Dietl et al (2016) demonstrated that the results of AMBI for the entirety of the living benthic community (i.e., annelids, arthropods, mollusks) can frequently be reproduced using solely the molluscan component of the community. Examining the benthic community data from 12 studies, Dietl et al (2016) calculated AMBI with only mollusks, emulating the type of data expected to be found in a death assemblage, and compared the results with AMBI values calculated from the whole macrobenthic invertebrate community. They developed a correction based on the relationship between whole-community and mollusk-only values that, when applied to the mollusk-only data, successfully recovered whole-community EcoQS for 78% of stations ( n = 45), validating the use of AMBI for the evaluation of the effects of eutrophication with the geohistorical record (e.g., Leshno et al 2016; Tweitmann and Dietl 2018; Caswell et al 2019).…”

Section: An Adaptable Live–dead Approach For a Changing Worldmentioning

confidence: 99%

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Increasing the salience of marine live–dead data in the Anthropocene

2020

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As the climate changes and ecosystems shift toward novel combinations of species, the methods and metrics of conservation science are becoming less species-centric. To meet this growing need, marine conservation paleobiologists stand to benefit from the addition of new, taxon-free benthic indices to the live–dead analysis tool kit. These indices, which were developed to provide actionable, policy-specific data, can be applied to the readily preservable component of benthic communities (e.g., mollusks) to assess the ecological quality status of the entire community. Because these indices are taxon-free, they remain applicable even as the climate changes and novel communities develop—making them a potentially valuable complement to traditionally applied approaches for live–dead analysis, which tend to focus on maintaining specific combinations of species under relatively stable environmental conditions. Integrating geohistorical data with these established indices has potential to increase the salience of the live–dead approach in the eyes of resource managers and other stakeholders.

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Section: Illustrative Referencesmentioning

confidence: 99%

“…• When mollusks compose a small proportion of the community, the correlation between mollusk-only and whole-community EcoQS weakens. Dietl et al 2016 Preservation of species abundance…”

Section: Illustrative Referencesmentioning

confidence: 99%