Extending temporal baseline increases understanding of biodiversity change in European boreal waterbird communities

Pöysä, Hannu; Linkola, Pentti

doi:10.1016/j.biocon.2021.109139

Cited by 23 publications

(22 citation statements)

References 71 publications

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“…Biodiversity baselines play an important role in understanding the impact of multiple stressors such as climate change and anthropogenic pressures on biodiversity (Vernooy et al, 2010). Monitoring programmes enable the observation of ecological temporal variability and enhance our capacity to manage species and ecosystems (Pöysä & Linkola., 2021). The past decade has experienced a surge in the development of DNA-based approaches to support rapid biodiversity assessments (Siegenthaler et al, 2018; Shum & Palumbi, 2021), with recent work harnessing the ‘natural sampler’ ability of organisms to collect DNA from the environment.…”

Section: Discussionmentioning

confidence: 99%

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DNA metabarcoding reveals the dietary profiles of a benthic marine crustacean,Nephrops norvegicus

Shum

Wäge

Sellers

et al. 2022

Preprint

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Norwegian lobster,Nephrops norvegicus, are a generalist scavenger and predator capable of short foraging excursions but can also suspension feed. Existing knowledge about their diet relies on a combination of methods including morphology-based stomach content analysis and stable isotopes, which are time and experience costly and often lack the resolution to distinguish prey items to species level. DNA metabarcoding overcomes many of the challenges associated with traditional methods and it is an attractive approach to study the dietary profiles of animals. Here, we present the diet of the commercially valuableNephrops norvegicususing DNA metabarcoding of gut contents. Despite difficulties associated with host amplification, our cytochrome oxidase I (COI) molecular assay successfully achieves higher resolution information than previously used traditional approaches. We detected taxa that were likely consumed during different feeding strategies. Dinoflagellata, Chlorophyta and Bacillariophyta accounted for almost 50% of the prey items consumed, and are associated with suspension feeding, while fish with high discard rates were detected which are linked to active foraging. In addition, we were able to characterise biodiversity patterns by consideringNephropsas natural samplers, as well as detecting parasitic dinoflagellates (e.g., Hematodinium sp.) in over 50% of the samples, which are known to influence burrow related behaviour in infected individuals. The metabarcoding data presented here greatly enhances a better understanding of a species' ecological role that can be applied as a routine procedure in future studies for proper consideration in the management and decision-making of fisheries.

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Section: Discussionmentioning

confidence: 99%

“…Monitoring programmes enable the observation of ecological temporal variability and enhance our capacity to manage species and ecosystems (Pöysä & Linkola., 2021). The past decade has experienced a surge in the development of DNA-based approaches to support rapid biodiversity .…”

Section: Sentinels Of Biodiversitymentioning

confidence: 99%

DNA metabarcoding reveals the dietary profiles of a benthic marine crustacean,Nephrops norvegicus

Shum

Wäge

Sellers

et al. 2022

Preprint

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“…Increased predation rates are possibly limiting the numbers of ground-nesting birds, such as gamebirds and waders in Europe (MacDonald and Bolton 2008;Roos et al 2018). Annual Finnish breeding duck pair surveys show drastic declining trends for several duck species over the last 30 years, but those breeding in eutrophic lakes have declined more than in oligotrophic lakes (Pöysä et al 2013;Lehikoinen et al 2016;Pöysä and Linkola 2021). Habitat-related differences in generally increasing predator pressure is one of the suspected reasons for differences in population trajectories between habitats and between species within habitats (see Pöysä et al 2019;Pöysä and Linkola 2021).…”

Section: Discussionmentioning

confidence: 99%

Do alien predators pose a particular risk to duck nests in Northern Europe? Results from an artificial nest experiment

et al. 2021

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Several alien predator species have spread widely in Europe during the last five decades and pose a potential enhanced risk to native nesting ducks and their eggs. Because predation is an important factor limiting Northern Hemisphere duck nest survival, we ask the question, do alien species increase the nest loss risk to ground nesting ducks? We created 418 artificial duck nests in low densities around inland waters in Finland and Denmark during 2017–2019 and monitored them for seven days after construction using wildlife cameras to record whether alien species visit and prey on the nests more often than native species. We sampled various duck breeding habitats from eutrophic agricultural lakes and wetlands to oligotrophic lakes and urban environments. The results differed between habitats and the two countries, which likely reflect the local population densities of the predator species. The raccoon dog (Nyctereutes procyonoides), an alien species, was the most common mammalian nest visitor in all habitats and its occurrence reduced nest survival. Only in wetland habitats was the native red fox (Vulpes vulpes) an equally common nest visitor, where another alien species, the American mink (Neovison vison), also occurred among nest visitors. Although cautious about concluding too much from visitations to artificial nests, these results imply that duck breeding habitats in Northern Europe already support abundant and effective alien nest predators, whose relative frequency of visitation to artificial nests suggest that they potentially add to the nest predation risk to ducks over native predators.

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“…However, with the rapid economic growth, QBEW faces severe environmental problems, such as water and air pollution, over shing, invasive alien species, and urban land encroachment. These issues seriously endanger the habitat of native waterbirds, which are sensitive to changes in the environment Pöysä et al, 2021). Thus, the species and population of waterbird often regard as environmental indicators (Green and Elmberg, 2014;Beatty et al, 2014;Zhang et al, 2018;Luo et al, 2019;Fan et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of the intelligent system for automatically monitoring waterbirds in Quanzhou Bar Wetland

Wang

Que

Liu

et al. 2023

Preprint

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The abundance and quantity of waterbird species are often used to evaluate the ecological status of wetlands because most waterbirds are sensitive to the environment. Traditional methods of detecting waterbirds are not only time-consuming but also inaccurate. Some investigations may even be at risk of the natural environment, E.g., bad weather or wild animal attacks. To address this issue, we designed an intelligent waterbird automatic identification system based on Model-View-Viewmodel (MVVM) framework which can support high effectively, safe and long-time monitoring the native wetland waterbirds. To implement the system, we trained a waterbird identification model (WIM) using the YOLOv5 algorithm and deployed it on a back-end for real-time detections, species identifications, and recording counts at different time intervals. It was integrated into a WebGIS-based application, which can be helpful for user to observe the spatial distributions of waterbirds of different species and analyzing their changing laws. We employed a PostgreSQL Database to manage geospatial data and designed the corresponding data access APIs. In addition, a tool for uploading and labeling images online was implemented for pre-training, retraining, and updating the WIM. In our current system, the image Database plays a vital role and it is designed to be auto-update, which means that once our users finished uploading a new image, the pretrained WIM on the back-end will be updated automatically. Although the system is still on its initial testing phase, some results show that it works well. The identifying rate and recall of native waterbird can reach 81.00% and 99.00%, respectively. The ongoing system is able to meet the basic requirements of detecting native wetland waterbird species and record the maximum number of observations of different species within a certain time interval specified by users. And it will provide more information about for managers to better understand the waterbirds and the wetland environment.

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Extending temporal baseline increases understanding of biodiversity change in European boreal waterbird communities

Cited by 23 publications

References 71 publications

DNA metabarcoding reveals the dietary profiles of a benthic marine crustacean,Nephrops norvegicus

DNA metabarcoding reveals the dietary profiles of a benthic marine crustacean,Nephrops norvegicus

Do alien predators pose a particular risk to duck nests in Northern Europe? Results from an artificial nest experiment

Design and implementation of the intelligent system for automatically monitoring waterbirds in Quanzhou Bar Wetland

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