scholarly journals Long-term impacts of invasive species on a native top predator in a large lake system

2012 ◽  
Vol 57 (11) ◽  
pp. 2342-2355 ◽  
Author(s):  
SCOTT A. RUSH ◽  
GORDON PATERSON ◽  
TIM B. JOHNSON ◽  
KEN G. DROUILLARD ◽  
GORDON D. HAFFNER ◽  
...  
Keyword(s):  
Invasive Species ◽  
Large Lake ◽  
Top Predator ◽  
Lake System

scholarly journals Long Term Interactions of Native and Invasive Species in a Marine Protected Area Suggest Complex Cascading Effects Challenging Conservation Outcomes

Diversity ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 71
Author(s):  
Charalampos Dimitriadis ◽  
Ivoni Fournari-Konstantinidou ◽  
Laurent Sourbès ◽  
Drosos Koutsoubas ◽  
Stelios Katsanevakis
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
High Performance ◽  
Marine Protected Area ◽  
Habitat Degradation ◽  
Population Increase ◽  
Rocky Reef ◽  
Cascading Effects ◽  
High Level

Understanding the interactions among invasive species, native species and marine protected areas (MPAs), and the long-term regime shifts in MPAs is receiving increased attention, since biological invasions can alter the structure and functioning of the protected ecosystems and challenge conservation efforts. Here we found evidence of marked modifications in the rocky reef associated biota in a Mediterranean MPA from 2009 to 2019 through visual census surveys, due to the presence of invasive species altering the structure of the ecosystem and triggering complex cascading effects on the long term. Low levels of the populations of native high-level predators were accompanied by the population increase and high performance of both native and invasive fish herbivores. Subsequently the overgrazing and habitat degradation resulted in cascading effects towards the diminishing of the native and invasive invertebrate grazers and omnivorous benthic species. Our study represents a good showcase of how invasive species can coexist or exclude native biota and at the same time regulate or out-compete other established invaders and native species.

scholarly journals Long-Term Monitoring Reveals Differential Responses of Mussel and Host Fish Communities in a Biodiversity Hotspot

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 122
Author(s):  
Irene Sanchez Gonzalez ◽  
Garrett W. Hopper ◽  
Jamie Bucholz ◽  
Carla L. Atkinson
Keyword(s):  
Invasive Species ◽  
Life History ◽  
Biodiversity Hotspot ◽  
Biodiversity Hotspots ◽  
Host Fish ◽  
Long Term Monitoring ◽  
Differential Responses ◽  
Taxonomic Groups ◽  
Term Monitoring

Biodiversity hotspots can serve as protected areas that aid in species conservation. Long-term monitoring of multiple taxonomic groups within biodiversity hotspots can offer insight into factors influencing their dynamics. Mussels (Bivalvia: Unionidae) and fish are highly diverse and imperiled groups of organisms with contrasting life histories that should influence their response to ecological factors associated with local and global change. Here we use historical and contemporary fish and mussel survey data to assess fish and mussel community changes over a 33 year period (1986–2019) and relationships between mussel abundance and their host fish abundance in Bogue Chitto Creek, a tributary of the Alabama River and a biodiversity hotspot. Mussel abundance declined by ~80% and community composition shifted, with eight species previously recorded not found in 2019, and a single individual of the endangered Pleurobema decisum. Fish abundances increased and life history strategies in the community appeared stable and there was no apparent relationship between mussel declines and abundance of host fish. Temporal variation in the proportion of life history traits composing mussel assemblages was also indicative of the disturbances specifically affecting the mussel community. However, changes and declines in mussel assemblages in Bogue Chitto Creek cannot be firmly attributed to any specific factor or events because of gaps in historical environmental and biological data. We believe that mobility differences contributed to differential responses of fish and mussel communities to stressors including habitat degradation, recent droughts and invasive species. Overall, our work indicates that monitoring biodiversity hotspots using hydrological measurements, standardized survey methods and monitoring invasive species abundance would better identify the effects of multiple and interactive stressors that impact disparate taxonomic groups in freshwater ecosystems.

scholarly journals The intersection of basic research and conservation: a 30-year study of the Critically Endangered Schiedea adamantis (Caryophyllaceae) on Lē‘ahi (Diamond Head Crater), Hawai‘i

Oryx ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 479-488 ◽  
Author(s):  
Ann K. Sakai ◽  
Stephen G. Weller ◽  
Weigang Yang ◽  
Susan Ching Harbin ◽  
Talia Portner ◽  
...  
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Basic Research ◽  
Breeding Systems ◽  
Critically Endangered ◽  
Supplemental Irrigation ◽  
Long Term Study ◽  
And Storage ◽  
Species Being

AbstractWe report on how a long-term study of the reproductive biology of the Critically Endangered Schiedea adamantis (Caryophyllaceae), one of Hawai‘i's rarest plant species, was leveraged for conservation purposes. Our major goals were to provide seeds with the greatest genetic variation possible for reintroduction and to ensure that both female and hermaphroditic plants of this wind-pollinated species were reintroduced in a manner that maximized both outcrossing and seed production. Schiedea adamantis was one of the first Hawaiian plant species listed under the Endangered Species Act (USA). The species has been studied intensively to test hypotheses addressing the evolution of breeding systems. Information on outcrossing levels and the extent of inbreeding depression was integrated into ongoing reintroduction efforts. Population size peaked in 1994, when 267 flowering individuals were found on Lē‘ahi (Diamond Head Crater). By 2016 only 17 flowering individuals were present, with drought and invasive species being possible causes of this decline. Reintroduction attempts in 1998 using genetically diverse seeds were unsuccessful because of drought and a lack of sufficient supplemental irrigation. Additional reintroduction attempts in 2012 and 2014 were more successful because of increased supplemental irrigation. Plants used in reintroductions represent genotypes long since absent in the natural population, and may contain the genetic variability essential for evolutionary responses to climate change and the spread of invasive species. The destruction of many plants reintroduced in 2015 and 2016 by a fire in March 2016 highlights the need for additional restoration areas at Lē‘ahi and elsewhere, and storage of seeds for future use.

scholarly journals Biomonitoring using invasive species in a large Lake: Dreissena distribution maps hypoxic zones

2018 ◽  
Vol 44 (4) ◽  
pp. 639-649 ◽  
Author(s):  
Alexander Y. Karatayev ◽  
Lyubov E. Burlakova ◽  
Knut Mehler ◽  
Serghei A. Bocaniov ◽  
Paris D. Collingsworth ◽  
...  
Keyword(s):  
Invasive Species ◽  
Large Lake ◽  
Distribution Maps

scholarly journals Previous Land Use and Invasive Species Impacts on Long-term Afforestation Success

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 3123-3135 ◽  
Author(s):  
Joshua Nickelson ◽  
Eric Holzmueller ◽  
John Groninger ◽  
Damon Lesmeister
Keyword(s):  
Land Use ◽  
Invasive Species

Depressed, hypertense and sore: Long-term effects of fluoxetine, propranolol and diclofenac exposure in a top predator fish

2020 ◽  
Vol 712 ◽  
pp. 136564 ◽  
Author(s):  
Irina A. Duarte ◽  
Patrick Reis-Santos ◽  
Sara C. Novais ◽  
Lénia D. Rato ◽  
Marco F.L. Lemos ◽  
...  
Keyword(s):  
Top Predator ◽  
Long Term Effects

Potential of “Lure and Kill” in Long-Term Pest Management and Eradication of Invasive Species

2009 ◽  
Vol 102 (3) ◽  
pp. 815-835 ◽  
Author(s):  
A. M. El-Sayed ◽  
D. M. Suckling ◽  
J. A. Byers ◽  
E. B. Jang ◽  
C. H. Wearing
Keyword(s):  
Invasive Species ◽  
Pest Management
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