Effects of Salinity and Temperature on Survival and Reproduction of Boeckella hamata (Copepoda: Calanoida) from a Periodically Brackish Lake

Hall, Catherine J.

doi:10.1093/plankt/23.1.97

Cited by 48 publications

(29 citation statements)

References 26 publications

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“…Indeed, climate-induced salinity increases can drive coastal systems to a state of depleted zooplankton biodiversity and altered ecosystem functioning (Schallenberg et al, 2003). The interactive effects of multiple stressors, such as higher temperatures and increased salinities, under natural conditions are not yet understood, but laboratory experiments show a lower tolerance to salinity as temperature increases for some freshwater zooplankton (Hall and Burns, 2001;2002).…”

Section: Identification and Description Of The Main Threats Affectingmentioning

confidence: 99%

Neotropical coastal lagoons: an appraisal of their biodiversity, functioning, threats and conservation management

et al. 2008

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Neotropical coastal lagoons (NCL) are human-dominated ecosystems. Their distribution along densely populated coastal areas of developing countries makes these systems among the most threatened in the world. Here, we summarize some aspects of the causes and consequences of NCL biodiversity, their functioning, their importance to the surrounding populations, their fragility, and their responses to local and global anthropogenic impacts and the challenges that Neotropical countries face in conserving these systems. Although still scarce and geographically concentrated, a growing body of studies has shown that NCLs are physiographically diversified systems, which harbor a considerable and particular proportion of the Neotropical inland aquatic biodiversity. Despite the fact that coastal lagoons are ecotones that are intricately connected to surrounding environments, they develop mechanisms for structural and functional regulation, which confer to these systems higher productivity and carrying capacities than surrounding ecosystems. Such traits attract residential developments and subsidize local traditional populations with important economic and aesthetic ecosystem revenues such as fisheries and scenic beauty. However, the disorganized human occupation around NCLs are causing profound impacts such as eutrophication, salinization, exotic species introduction, as well as other effects, which are ultimately imposing major habitat degradations and biodiversity extirpations in NCLs. We argue that interdisciplinary conservation strategies, which integrate scientific expertise, government officials, private companies and the general public, are the most likely to overcome the geographic and economic obstacles to NCL conservation.Keywords: coastal ecosystems, ecosystem management, shallow lakes, human impacts, tropical limnology.Lagoas costeiras neotropicais: Uma apreciação sobre sua biodiversidade, funcionamento, principais ameaças e estratégias de conservação ResumoAs lagoas costeiras neotropicais (LCN) estão inseridas em um ambiente antropogênico. Sua localização em regiões costeiras densamente povoadas de países em desenvolvimento coloca estes ecossistemas entre os mais impactados do mundo. Neste trabalho, resumimos vários aspectos relacionados às causas e conseqüências da sua biodiversidade, seu funcionamento e os bens proporcionados à população do seu entorno. Sua fragilidade e as respostas a impactos humanos locais e globais, assim como os desafios para a sua conservação por países neotropicais, também são abordados. Apesar de escassos e geograficamente concentrados, um número crescente de estudos tem mostrado que as LCN são sistemas fisiograficamente diversificados, abrigando uma proporção considerável da biodiversidade dos ambientes aquáticos continentais neotropicais. Apesar de as lagoas costeiras representarem ecótonos bastante conectados ao ambiente adjacente, elas desenvolveram mecanismos próprios de regulação funcional e estrutural, conferindo uma maior produtividade e capacidade de suporte em relação...

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Section: Identification and Description Of The Main Threats Affectingmentioning

confidence: 99%

Neotropical coastal lagoons: an appraisal of their biodiversity, functioning, threats and conservation management

et al. 2008

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“…In laboratory studies, the tolerance limits of B. hamata andD. carinata were <1000 mg litre L Cl and <750 mg litre-1 Cl, respectively (Hall & Burns 2001a, 2002a, whereas G. pectinatus demonstrated a salinity tolerance of >1000 mg litre L Cl (Hall & Burns 2002b). Owing to differences in the species' salinity tolerance thresholds, we hypothesised that, in Lake Waihola, salinity is the most important water quality variable determining the seasonal abundance and taxonomic composition of the crustacean zooplankton community, whereas water movement would strongly influence the distribution of the community.…”

Section: Introductionmentioning

confidence: 95%

Responses of crustacean zooplankton to seasonal and tidal salinity changes in the coastal Lake Waihola, New Zealand

Hall¹,

Burns²

2003

New Zealand Journal of Marine and Freshwater Research

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Lake Waihola is a shallow, tidal, coastal lake that receives brackish inflows resulting in salinities of up to 4.8‰. We determined the importance of salinity and tidal currents on crustacean zooplankton abundance and distribution in this lake over 2 years. Tidal currents were traced using drogues, and zooplankton was sampled over tidal cycles. Tidal currents reached velocities of 35 cm s -1 closest to the tidal inlet channel. Salinity explained 26% of the variation in the abundance and species composition of the zooplankton assemblage, and accounted for >60% of the species-environment correlation. Increases in salinity resulted in a change in crustacean dominance from the freshwater calanoid copepod, Boeckella hamata Brehm, and cladoceran, Daphnia carinata King, to the estuarine copepod, Gladioferens pectinatus Brady. The abundance of D. carinata was negatively correlated with chlorophyll a concentrations, although chlorophyll a was not correlated with salinity. Future increases in salinity and tidal currents may cause significant changes in the zooplankton community structure.

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“…had higher thermal tolerance than males in both populations, while the Florida population had 23 higher thermal tolerance compared to the Connecticut population. An effect of developmental 24 phenotypic plasticity on thermal tolerance was observed only in the Connecticut population. 25 Ignoring sex-specific differences may result in a severe underestimation of population-level 26 impacts of warming (i.e.…”

mentioning

confidence: 94%

“…Sex-specific 111 differences in thermal tolerance are observed across diverse systems [8,[19][20][21]. Within 112 copepods, the few studies that have examined sex-specific thermal tolerance have also found 113 females to be more thermally tolerant than males [9, [22][23][24], but ours is the first to examine these 114 differences in more than one adaptive mechanism (thermal tolerance and phenotypic plasticity), 115…”

mentioning

confidence: 99%

Complex interactions between local adaptation, plasticity, and sex affect vulnerability to warming in a widespread marine copepod

Sasaki

Hedberg

Richardson

et al. 2018

Preprint

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17 Predicting the response of populations to climate change requires knowledge of thermal 18 performance. Genetic differentiation and phenotypic plasticity affect thermal performance, but 19 the effects of sex and developmental temperatures often go uncharacterized. We used common 20 garden experiments to test for effects of local adaptation, developmental phenotypic plasticity, 21 and individual sex on thermal performance of the ubiquitous copepod, Acartia tonsa. Females 22

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Effects of Salinity and Temperature on Survival and Reproduction of Boeckella hamata (Copepoda: Calanoida) from a Periodically Brackish Lake

Cited by 48 publications

References 26 publications

Neotropical coastal lagoons: an appraisal of their biodiversity, functioning, threats and conservation management

Neotropical coastal lagoons: an appraisal of their biodiversity, functioning, threats and conservation management

Responses of crustacean zooplankton to seasonal and tidal salinity changes in the coastal Lake Waihola, New Zealand

Complex interactions between local adaptation, plasticity, and sex affect vulnerability to warming in a widespread marine copepod

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