Functionally similar but taxonomically different: Benthic communities in 1889 and 2006 in an industrialized estuary

Taupp, Thomas; Wetzel, Markus A.

doi:10.1016/j.ecss.2018.11.012

Cited by 21 publications

(8 citation statements)

References 69 publications

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“…Functional richness was defined as the amount of functional space occupied by a species assemblage and it is expected to be higher if the range of traits within a community is high, and lower if the range is low (Villéger et al, 2008). Maintaining FRic in ecosystems is important because reduced functional space occupied by a community could, for instance, allow alien species to use free niche space formerly occupied by indigenous taxa (Taupp and Wetzel, 2019). 2.…”

Section: Discussionmentioning

confidence: 99%

Temporal Variation in the Ecological Functioning of Benthic Communities After 20 Years in the Eastern Mediterranean

et al. 2021

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Marine benthic ecosystems face well-documented changes as a result of human activities. Describing these changes is important for predicting ecosystem functioning. In this context, long-term changes in soft-bottom macrofaunal communities after a quarter of a century were studied in the south Aegean Sea with the purpose of investigating whether temporal changes in taxa diversity are accompanied by changes in functional diversity, and secondly to determine the main mechanisms driving these changes (i.e., deterministic versus stochastic processes). To achieve this, a large data set that included species abundance data collected in 1990 and 2014 from several sampling sites along a transect line was used. A biological trait analysis (BTA) was conducted to determine the species functional roles. The results revealed a decline in taxonomic alpha and beta diversity metrics between 1990 and 2014, a difference that was also reflected in functional richness, partially in functional redundancy, but not in functional composition. The stability of functional composition indicated that replacements of functionally similar taxa may occur, ensuring the resilience of the ecosystem to provide goods and services. Finally, the comparison of co-occurrence and functional networks for 1990 indicated a non-differentiation with the null model and, it was not possible to determine if the benthic community was structured due to stochastic processes (e.g., dispersal, natural phenomena) or an overlap of deterministic processes (e.g., niche-filtering, competition). In contrast, the comparison of networks for 2014 pointed out that environmental conditions have acted as a major filter on species distribution.

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Section: Discussionmentioning

confidence: 99%

Temporal Variation in the Ecological Functioning of Benthic Communities After 20 Years in the Eastern Mediterranean

et al. 2021

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“…& Technol. 29 (1): 641 -662 (2021) estuaries and waterways from Southpoint and North Port, and this study could serve as a useful reference when conducting cluster sampling in areas surrounded by various point sources such as mangrove estuaries (Al-Khayat et al, 2018;Taupp & Wetzel, 2018), ports and berths (Belal et al, 2020) and waterways (Arbi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Distribution of Benthic Macroinvertebrates in Seafloor Northward of Pulau Indah, Klang

Kasihmuddin¹,

Cob²

2021

JST

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An assessment of community of benthic macroinvertebrates in waters northwards of Pulau Indah, Klang was made with the main objective to determine distribution and diversity of benthic macroinvertebrates as well as to establish possible correlation between the community’s distributions with environmental parameters. The sediments were obtained via Ponar Grab (0.023 m2 mouth area), followed by filtration (500 μm) and laboratory sorting in order to extract all specimens from sediments. The specimens were identified to the lowest taxonomic hierachy as possible. The physical parameters such as organic carbon (TOC) and grain size distributions were analysed. A total of 775 annelids, 15 arthropods, 12 echinoderms and 32 molluscs individuals were identified and recorded in six stations overall. Family Cirratulidae accounted to the highest numbers of the Annelids (n=358), whilst Cerithidae recorded as highest numbers of Molluscs. Station 5, 6 and 1 recorded the highest diversity index (H’=2.1845), evenness index (J’=0.6316) and richness index (Dmn=22.0454) respectively. Principal Component Analysis indicated sediment particle size as the major connector on all stations, with different station correlated to certain sizes of sediment particle. Pearson correlation analysis showed positive correlations between environmental parameters with eight benthic taxa in this study, with most correlations were on specific sediment particle size. As the study of benthic community is still inadequate in most of Malaysians waters, particularly in highly industrialised area such as waters in Port Klang, this study can serve as a starting point for any future studies concerning ecological disturbance affecting benthic community in Malaysian waters.

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“…The Elbe, originating in the Czech Republic, is one of the major rivers in Europe with regard to length and related catchment area 23 . While increasing effort to protect the different habitats within the Elbe estuary has led to ecological mitigations in some parts, the area still needs to be considered as a major hot spot of anthropogenic activity with recreational and commercial shipping (with 8719 seagoing commercial vessels in 2016 visiting Hamburg harbour) and large-scale sediment dredging and dumping operations taking place on an almost constant level 22 , 24 , 25 . In order to maintain the required depth for large ships within the harbour of Hamburg, 3–9 million m 3 of sediment needs to be extracted, while for maintenance of the channel from the harbour up to the mouth, another 12 million m 3 are extracted annually 22 .…”

Section: Introductionmentioning

confidence: 99%

Movements and spatial usage of harbour seals in the Elbe estuary in Germany

Neer

Nachtsheim

Siebert

et al. 2023

Sci Rep

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Harbour seals are top predators in the North Sea and regarded as sentinels for ecosystem health. A few hundred also occur in adjacent estuaries, such as the Elbe estuary, Germany. However, only little is known about how these animals use this dynamic tidally influenced habitat, which has been under high anthropogenic pressure for decades. In this context, nine harbour seals (Phoca vitulina) from the Elbe estuary were equipped with biotelemetry devices to track their movements over multiple months. Harbour seal movements were characterised by short trips (trip length outside pupping season for females: 9.0 ± 1.12 km, males: 7.0 ± 1.24 km) as well as small home ranges (median 50% home range for females: 16.3 km2, males: 36.1 km2) compared to harbour seals from marine regions. Within the estuary, the animals utilised the fairway, river branches and tributaries. During the pupping season in June and July, four seals showed strongly reduced trip lengths and durations, increased daily haul out durations as well as smaller home ranges. Even though a continuous exchange with harbour seals from the Wadden Sea likely occurs, most individuals in this study spent the entire deployment duration inside the estuary. This indicates that the Elbe estuary provides a suitable habitat for harbour seals, despite extensive anthropogenic usage, calling for further studies on the consequences of living in such an industrialised habitat.

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Functionally similar but taxonomically different: Benthic communities in 1889 and 2006 in an industrialized estuary

Cited by 21 publications

References 69 publications

Temporal Variation in the Ecological Functioning of Benthic Communities After 20 Years in the Eastern Mediterranean

Temporal Variation in the Ecological Functioning of Benthic Communities After 20 Years in the Eastern Mediterranean

Distribution of Benthic Macroinvertebrates in Seafloor Northward of Pulau Indah, Klang

Movements and spatial usage of harbour seals in the Elbe estuary in Germany

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