Global warming may lower thermal barriers against invasive species in freshwater ecosystems – A study from Lake Constance

The internationally important river–floodplains of the Kakadu Region in northern Australia are at risk from invasive species and future sea-level rise–saltwater inundation (SLR–SWI), requiring assessments of multiple cumulative risks over different time frames. An integrated risk-assessment framework was developed to assess threats from feral animals and aquatic weeds at three SLR-scenario time frames (present-day, 2070 and 2100) to natural (magpie goose habitats), cultural (indigenous hunting–fishing sites) and economic (tourism revenue less invasive species control costs) values. Probability density functions (pdfs) were fitted to spatial data to characterise values and threats, and combined with Monte Carlo simulation and sensitivity analyses to account for uncertainties. All risks were integrated in a Bayesian belief network to undertake ‘what if’ management-scenario analyses, and incorporated known ecological interactions and uncertainties. Coastal landscapes and socio-ecological systems in the region will be very different by 2100 as a result of SLR; freshwater ecosystems will transform to marine-dominated ecosystems and cannot be managed back to analogue conditions. In this context, future invasive-species risks will decrease, reflecting substantial loss of freshwater habitats previously at risk and a reduction in the extent of invasive species, highlighting the importance of freshwater refugia for the survival of iconic species.

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Participatory mapping of aquatic invasive species: a demonstration in a coastal lagoon

10.32942/osf.io/4wz59 ◽

2020 ◽

Author(s):

Jacopo Cerri ◽

Ernesto Azzurro

Keyword(s):

Invasive Species ◽

Coastal Lagoon ◽

Coefficient Of Variation ◽

Procambarus Clarkii ◽

Freshwater Ecosystems ◽

Aquatic Invasive Species ◽

Spatial Gradient ◽

Participatory Mapping ◽

Ecological Requirements ◽

Management Actions

Aquatic Invasive species (AIS) are a growing driver of change across marine and freshwater ecosystems but spatially-explicit information is seldom available for supporting management actions and decision making. Here we conceived and tested a new participatory method to map the distribution of three invasive species (Callinectes sapidus, Procambarus clarkii and Oreochromis niloticus) in the coastal lagoon of Lesina (Italy). Local fishers were asked to draw the distribution of each species on pre-printed maps, indicating districts of the lagoon characterized by different abundance levels. Then, maps were converted to a lattice grid and a Bayesian hierarchical Generalized Additive Modeling was adopted to model species distribution in the lagoon, calculating the coefficient of variation for model fitted values to map fishers agreement about the distribution of each species.The spatial gradient in the abundance of the three species in the lagoon aligned with their ecological requirements. C. sapidus was abundant throughout the whole lagoon, peaking in correspondence of saltmarsh vegetation, while P. clarkii and O. niloticus, were much less abundant and remained distributed near to freshwater inputs. Experts agreed about the spatial distribution of C. sapidus in the lagoon, with a median coefficient of variation in model fitted values of 3.9%. On the other hand, the coefficient of variation was higher for P.clarkii (19.9%) O. niloticus (18.4%), indicating a higher level of uncertainty about their estimated distribution.With this example, we provided new metrics to evaluate the quality of LEK-based participatory mapping in terms of agreement and consistency among experts. The resulting information provides new insights for spatially informed management across aquatic realms in relation to the increasing ecological and socio-economical pressures posed by biological invaders.

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Disentangling the direct and indirect effects of agricultural runoff on freshwater ecosystems subject to global warming: A microcosm study

Water Research ◽

10.1016/j.watres.2020.116713 ◽

2021 ◽

Vol 190 ◽

pp. 116713

Author(s):

Joey Allen ◽

Elisabeth M. Gross ◽

Camille Courcoul ◽

Stéphanie Bouletreau ◽

Arthur Compin ◽

...

Keyword(s):

Global Warming ◽

Indirect Effects ◽

Agricultural Runoff ◽

Freshwater Ecosystems ◽

Direct And Indirect Effects ◽

Microcosm Study

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Animal personality and the ecological impacts of freshwater non-native species

Current Zoology ◽

10.1093/czoolo/60.3.417 ◽

2014 ◽

Vol 60 (3) ◽

pp. 417-427 ◽

Cited By ~ 28

Author(s):

Tristan Juette ◽

Julien Cucherousset ◽

Julien Cote

Keyword(s):

Invasive Species ◽

Native Species ◽

Life History Traits ◽

Animal Personality ◽

Freshwater Ecosystems ◽

Personality Types ◽

Ecological Impacts ◽

Individual Level ◽

The Individual ◽

Taxonomic Groups

Abstract While the ecological impacts of invasive species have been demonstrated for many taxonomic groups, the potential effects of behavioural variation among non-native individuals (i.e. personality) on these impacts have been largely overlooked. This is despite the fact that recent studies have demonstrated that, by nature, the three first stages of biological invasions (i.e. transport, establishment and spread) can lead to personality-biased populations. Freshwater ecosystems provide a unique opportunity to investigate this issue, notably because the ecological impacts of non-native species have been extensively documented and because animal personality has been widely studied using freshwater model species. Here, we aim at developing some perspectives on the potential effects of animal personality on the ecological impacts of freshwater non-native species across levels of biological organizations. At the individual level, personality types have been demonstrated to affect the physiolo- gy, metabolism, life history traits and fitness of individuals. We used these effects to discuss how they could subsequently impact invaded populations and, in turn, recipient communities. We also discussed how these might translate into changes in the structure of food webs and the functioning of invaded ecosystems. Finally we discussed how these perspectives could interact with the management of invasive species.

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Review: Economic impacts of the invasive species water hyacinth (Eichhornia crassipes): Case study of Rawapening Lake, Central Java, Indonesia

International Journal of Bonorowo Wetlands ◽

10.13057/bonorowo/w110103 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

ANINDA MAULIDYNA ◽

FITRI ALICIA ◽

HERLINA NOOR AGUSTIN ◽

INDAH ROSITA DEWI ◽

ITSNA NURHIDAYAH ◽

...

Keyword(s):

Invasive Species ◽

Introduced Species ◽

Water Hyacinth ◽

Eichhornia Crassipes ◽

Negative Impact ◽

Economic Impacts ◽

Freshwater Ecosystems ◽

Central Java ◽

Positive Impacts

Abstract. Maulidyna A, Alicia F, Agustin HN, Dewi IR, Nurhidayah I, Dewangga A, Kusumaningrum L, Nugroho GD, Jumari, Setyawan AD. 2019. Review: Economic impacts of the invasive species water hyacinth (Eichhornia crassipes): Case study of Rawapening Lake, Central Java, Indonesia. Intl J Bonorowo Wetlands 11: 18-31. Introduced species is defined as a conscious or unconscious effort to present a species of animal or plant into a new habitat. Introduced species have two pathways on their biogeographical distribution, namely becoming an invasive species or not becoming an invasive species. An introduced species which does not have a negative impact on the new habitat is not classified as an invasive species, while a species that is introduced and does have a negative impact on the new habitat is considered as invasive species. One of the problems that threaten freshwater ecosystems in Indonesia is the invasion of water hyacinth (Eichhornia crassipes). This introduced plant species can reproduce rapidly, both generatively and vegetatively, and form very dense masses in water bodies, such as swamps, lakes, rivers, and channels including in Rawapening Lake in Semarang District, Central Java, Indonesia. This study is aimed to review the economic impacts of the invasive water hyacinth species in Rawapening Lake from two perspectives: the negative and the positive impacts, so that feasible solutions can be developed. There are several negative impacts caused by water hyacinth in Rawapening Lake. The overgrown water hyacinth in the lake hinders the fishermen in maneuvering the boats and fishing gears, reducing the fish catches. The extensive coverage of water hyacinth causes the reduction in soluble oxygen and blocks sunlight into the water, leading to the decline of fish population. The rotten water hyacinth can obstruct the irrigation channels of the fields so that farmers cannot produce maximum rice harvests and eradicating them would incur financial costs. On the other hand, there are also positive impacts of water hyacinth in Rawapening Lake. This plant can be used as raw materials to produce a variety of handicrafts in the form of bags, sandals, baskets, wallets, and furniture such as chairs and tables. Water hyacinth can also be processed in biogas production and organic fertilizers. With careful management, water hyacinth can remediate polluted water caused by heavy metals contamination. In short, economically, the presence of water hyacinth in Rawapening can be both beneficial and detrimental. Proper management of this species is necessary to maintain the sustainability of this aquatic environment. r

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Quality of Lake Ecosystems and its Role in the Spread of Invasive Species

Environmental and Climate Technologies ◽

10.2478/rtuect-2021-0051 ◽

2021 ◽

Vol 25 (1) ◽

pp. 676-687

Author(s):

Oskars Purmalis ◽

Laura Grīnberga ◽

Linards Kļaviņš ◽

Māris Kļaviņš

Keyword(s):

Water Quality ◽

Invasive Species ◽

Hydrological Regime ◽

Lake Management ◽

Common Reed ◽

Freshwater Ecosystems ◽

Lake Water Quality ◽

Lake Ecosystems ◽

Management Measures

Abstract Lake ecosystems are important elements of hydrological regime, the quality of these ecosystems is affected by anthropogenic actions, and therefore, a variety of organisms, living in these habitats depend on the applied management solutions. Due to human activities freshwater ecosystems suffer from loss of biodiversity and increased eutrophication. Therefore, important aspects related to lake management include knowledge about the water quality, ecosystem response to climate change as well as increased risks of appearance and spreading of invasive species. Water quality, content of oxygen, nutrients, phytoplankton and distribution of macrophytes, including invasive species were analysed in Balvu and Pērkonu lakes. Presence of invasive species Canadian waterweed (Elodea canadensis) was detected, however, common reed (Phragmites australis) can be considered as expansive species. The analysis of current situation and existing management measures indicates persistent spreading of those species. Significant changes of lake water quality and climate may increase possible spreading of other, more aggressive, invasive species, for example – Nuttall’s waterweed (Elodea nuttallii).

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Effective removal of the American bullfrog (Lithobates catesbeianus) on a landscape level: long term monitoring and removal efforts in Yosemite Valley, Yosemite National Park

Biological Invasions ◽

10.1007/s10530-019-02116-4 ◽

2019 ◽

Vol 22 (2) ◽

pp. 617-626 ◽

Cited By ~ 1

Author(s):

Colleen Kamoroff ◽

Ninette Daniele ◽

Robert L. Grasso ◽

Rebecca Rising ◽

Travis Espinoza ◽

...

Keyword(s):

Invasive Species ◽

National Parks ◽

National Park ◽

Environmental Dna ◽

Freshwater Ecosystems ◽

Yosemite National Park ◽

American Bullfrog ◽

Yosemite Valley ◽

Park Service ◽

Landscape Level

Abstract Invasive alien species are a major threat to freshwater ecosystems, and American bullfrogs are among the world’s 100 most prominent aquatic invasive species causing negative direct and indirect effect on native aquatic fauna worldwide. Bullfrogs were intentionally introduced into Yosemite Valley, Yosemite National Park in the 1950s where they became well established in the subsequent years. Starting in 2005, the National Park Service (NPS) began bullfrog removal, targeting various life stages using hand, net, and spear techniques. Starting in 2015, the NPS conducted environmental DNA (eDNA) surveys and deployed audio recordings devices to ensure adequate detection of bullfrogs. During the first year of cencerted effort in the Valley in 2005, the NPS removed 86% of all recorded bullfrog. The subsequent decade was spent searching for individuals with lower return on effort. In 2012, the NPS removed the last observed signs of bullfrog breeding, and the last observed bullfrog in 2019. Following removal of the breeding bullfrog population, the NPS began restoration projects for species of special concern. The NPS introduced the federally threatened California red-legged frogs (Rana draytonii) into Yosemite Valley beginning in 2016. This is the first published successful eradication of bullfrogs on a landscape level. National Parks and Monuments often provide refuges for imperiled wildlife and should be managed to remove invasive species. Our work highlights effective bullfrog removal is obtainable and can lead to local recovery of endangered species.

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Wilderness Conservation in an Era of Global Warming and Invasive Species: A Case Study from Minnesota's Boundary Waters Canoe Area Wilderness

Natural Areas Journal ◽

10.3375/043.029.0405 ◽

2009 ◽

Vol 29 (4) ◽

pp. 385-393 ◽

Cited By ~ 18

Author(s):

Lee E. Frelich ◽

Peter B. Reich

Keyword(s):

Invasive Species ◽

Global Warming

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A risk assessment for the introduction of invasive fish for Kejimkujik National Park and National Historic Site, Canada

Marine and Freshwater Research ◽

10.1071/mf16069 ◽

2017 ◽

Vol 68 (7) ◽

pp. 1292 ◽

Cited By ~ 2

Author(s):

Mathew Davis ◽

Chris McCarthy ◽

Karen Beazley

Keyword(s):

Invasive Species ◽

Habitat Suitability ◽

National Park ◽

Freshwater Ecosystems ◽

Smallmouth Bass ◽

Ecological Effects ◽

Source Population ◽

Historic Site ◽

Management Techniques ◽

Kejimkujik National Park

Recent research has highlighted the need for invasive species risk assessments that consider multiple factors, such as habitat suitability and life history. With invasive species encroaching on the boundary of Kejimkujik National Park and National Historic Site (Kejimkujik), Canada, there is concern surrounding the potential ecological effects on the Park’s freshwater ecosystems. Herein we present a multifactor risk analysis for the risks of introduction of two invasive species, smallmouth bass and chain pickerel. Methods included computer-based analysis of cost–distance and habitat suitability, and a literature-based review of management techniques. Smallmouth bass were found to have a high risk of establishment and consequent ecological effects in Kejimkujik. Although chain pickerel can also negatively affect aquatic communities, their separation from the Park’s primary watershed and low dispersal ability resulted in lower levels of risk. Four recommendations were developed following a review of management techniques: (1) containment of the source population for smallmouth bass; (2) public education, outreach and communication; (3) monitoring and rapid response upon detection; and (4) collaboration with other parties. Although the present study focused on Kejimkujik, similar challenges for invasive freshwater fish assessment and mitigation exist elsewhere, and our methods may prove illustrative for researchers and managers working under similar conditions.

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Freshwater ecosystems and aquatic insects: a paradox in biological invasions

Biology Letters ◽

10.1098/rsbl.2015.1075 ◽

2016 ◽

Vol 12 (4) ◽

pp. 20151075 ◽

Cited By ~ 12

Author(s):

Stefano Fenoglio ◽

Núria Bonada ◽

Simone Guareschi ◽

Manuel J. López-Rodríguez ◽

Andrés Millán ◽

...

Keyword(s):

Invasive Species ◽

Biological Invasions ◽

Aquatic Insects ◽

Large Fraction ◽

Biodiversity Loss ◽

Taxonomic Diversity ◽

Freshwater Ecosystems ◽

Anthropogenic Factors ◽

Invasive Insects ◽

Scientific Discussion

Biological invasions have increased significantly in response to global change and constitute one of the major causes of biodiversity loss. Insects make up a large fraction of invasive species, in general, and freshwaters are among the most invaded ecosystems on our planet. However, even though aquatic insects dominate most inland waters, have unparalleled taxonomic diversity and occupy nearly all trophic niches, there are almost no invasive insects in freshwaters. We present some hypotheses regarding why aquatic insects are not common among aquatic invasive organisms, suggesting that it may be the result of a suite of biological, ecological and anthropogenic factors. Such specific knowledge introduces a paradox in the current scientific discussion on invasive species; therefore, a more in-depth understanding could be an invaluable aid to disentangling how and why biological invasions occur.

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