Hydrological stability drives both local and regional diversity patterns in rock pool metacommunities

Brendonck, Luc; Jocqué, Merlijn; Tuytens, Karen; Timms, Brian V.; Vanschoenwinkel, Bram

doi:10.1111/oik.01710

Cited by 65 publications

(78 citation statements)

References 47 publications

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“…1. The hydroregime, in turn, affects habitat size, species distributions, species diversity, and composition (Pyke 2005, Waterkeyn et al 2008, Ripley and Simovich 2009, Sim et al 2013, Brendonck et al 2014, Kneitel 2014. The symbols represent different dispersal strategies: circles show total diversity, plus signs show passive dispersers, and × shows active dispersers.…”

Section: Discussionmentioning

confidence: 99%

“…However, recent studies, mostly in smaller freshwater ecosystems, have exhibited reverse latitudinal gradients (e.g., Buckley et al 2003, Mori et al 2010, Brendonck et al 2014. Hydrological stability, and hence habitat size, has been identified as the primary factor affecting the LDG in these systems: higher instability (increased desiccation or flooding rates) results in a decrease in species richness at lower latitudes (Mori et al 2010, Brendonck et al 2014). In the present study, vernal pool surface area was most correlated to α (and β) diversity along the latitudinal gradient.…”

Section: Discussionmentioning

confidence: 99%

“…A preponderance of studies show consistent increasing diversity towards lower latitudes at these different scales (e.g., Stevens and Willig 2002, Rodríguez and Arita 2004, Kraft et al 2011. Of course, studies have also shown no changes (Clarke andLidgard 2000, Soininen et al 2007a) and reverse latitudinal-diversity gradients at some spatial scales (Buckley et al 2003, Brendonck et al 2014.…”

Section: Introductionmentioning

confidence: 97%

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Climate-driven habitat size determines the latitudinal diversity gradient in temporary ponds

Kneitel

2015

Ecology

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The latitudinal diversity gradient (LDG) has been one of the most documented patterns in ecology, typically showing decreasing species diversity with increasing latitude. Studies of these patterns also used different spatial scales and dispersal traits to better understand the underpinning ecological factors. Seasonal freshwater ecosystems are less studied and may exhibit different patterns because they are more sensitive to climatic variation, which result in an inundation-desiccation cycle. In California, precipitation increases and temperature decreases with increasing latitude and thus the LDG pattern may be associated with this climatic gradient. Using collected data and United States Fish and Wildlife Service reports across seven degrees of latitude, analysis of California vernal pool invertebrate community (total richness and richness of passive and active dispersers) was conducted using correlations (Spearman rank and partial). Alpha diversity (total and passive dispersers) increased and beta diversity (passive dispersers) decreased with increasing latitude. Vernal pool surface area was correlated with active disperser alpha and passive disperser beta diversity. This suggests that climate-driven habitat size influences alpha and beta diversity patterns depending on dispersal ability. Active dispersers and predators exhibited higher beta diversity than passive dispersers and prey, respectively. Species composition differed among counties and some of these differences were correlated with pool depth and temperature. These results suggest that seasonal habitats will have diversity patterns strongly associated with local scale characteristics (habitat size and hydroperiod) determined by climate variation along the latitudinal gradient. Understanding these diversity patterns along the gradient will also contribute to management and restoration of these ecosystems with high endemism and diversity.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Climate-driven habitat size determines the latitudinal diversity gradient in temporary ponds

Kneitel

2015

Ecology

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“…Both reduced hydroperiod length and increased drying frequency result in lower species richness (Brendonck et al. 2015), and while both processes affected our mesocosms, it is likely that drying frequency in particular was responsible for the reduced diversity observed in the short-hydroperiod treatments.…”

Section: Discussionmentioning

confidence: 86%

“…2008; Boven and Brendonck 2009; Brendonck et al. 2015); however, some studies have found that richness was greatest in wetlands of intermediate hydroperiod (DeBiase and Taylor 2005; Frisch et al. 2006).…”

Section: Discussionmentioning

confidence: 99%

The effect of hydroperiod and predation on the diversity of temporary pond zooplankton communities

Zokan

Drake

2015

Ecology and Evolution

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In temporary pond ecosystems, it is hypothesized that the two dominant structuring forces on zooplankton communities are predation and demographic constraints due to wetland drying. Both of these forces are deterministic processes that act most strongly at opposing ends of a hydroperiod gradient. Our objective was to test how these two processes affect α- and β-diversity of zooplankton communities derived from a diverse temporary pond system. We hypothesized that decreased hydroperiod length and the presence of salamander larvae as predators would decrease β-diversity and that intermediate hydroperiod communities would have the greatest species richness. Our 1-year mesocosm experiment (n = 36) consisted of two predation treatments (present/absent) and three hydroperiod treatments (short/medium/long) fully crossed, seeded from the resting egg bank of multiple temporary ponds. In total, we collected 37 species of microcrustacean zooplankton from our mesocosms. A reduction in hydroperiod length resulted in lower α-diversity, with short-hydroperiod treatments affected most strongly. Endpoint community dissimilarity (β-diversity) was greatest in the medium-hydroperiod treatment with regard to species presence/absence, but was greatest in the long-hydroperiod treatment when abundances were included. Predation by salamander larvae led to reduced β-diversity with respect to species presence/absence, but not among abundant species, and had no effect on α-diversity. Our results suggest that environmental changes that reduce hydroperiod length would result in reduced α-diversity; however, intermediate hydroperiod length appear to enhance β-diversity within a group of wetlands.

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Do active‐dispersing insects dominate the invertebrate fauna of rock pools in the wet–dry tropics, Kimberley, Australia?

Carey

Cross

Barrett

et al. 2019

Aquatic Conservation

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Invertebrate assemblages of tropical freshwater rock pools (FRPs) are poorly known compared with temperate regions, where FRPs contain specialized, endemic taxa of high conservation value. Invertebrates were sampled from pristine FRPs in the Morgan River catchment in the Australian wet–dry tropics in the 2015 and 2016 wet seasons. Taxa were classified as either active or passive dispersers and by functional feeding groups. A range of physical variables were examined to identify associations with invertebrate assemblages. Forty‐seven taxa were identified from FRPs; most were actively dispersing predatory insects, primarily Coleoptera and Hemiptera. Five adult insect species were found in most pools; other taxa were rare and scattered across FRPs. Two previously undescribed species of Spinicaudata were collected, but few crustacean taxa were recorded, and passively dispersing taxa were rare. Species accumulation curves indicated that had more pools been sampled, more taxa would have been collected in 2015, but in 2016 most species were collected. There was no pattern in FRP assemblages related to any physical variable, but the assemblages in pools were correlated between sampling times. An opportunistic and mobile assemblage composed mostly of actively dispersing predatory insects may explain the absence of relationships with measured variables. Low hydrological stability in the wet–dry tropics may be associated with low taxon richness. The dominance of actively dispersing insects is in contrast with FRP assemblages in temperate and arid regions. Studies of a wider range of FRPs from tropical regions are required to determine whether the fauna of these Kimberley FRPs are typical, and to fully describe short‐range endemic species across the Kimberley and elsewhere. The FRPs have conservation value as habitat for endemic, specialist rock‐pool taxa, contributing to regional species pools. At present, a lack of knowledge of endemic FRP specialist species in tropical regions, including the Kimberley, impedes our ability to protect and conserve these species from disturbance.

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Hydrological stability drives both local and regional diversity patterns in rock pool metacommunities

Cited by 65 publications

References 47 publications

Climate-driven habitat size determines the latitudinal diversity gradient in temporary ponds

Climate-driven habitat size determines the latitudinal diversity gradient in temporary ponds

The effect of hydroperiod and predation on the diversity of temporary pond zooplankton communities

Do active‐dispersing insects dominate the invertebrate fauna of rock pools in the wet–dry tropics, Kimberley, Australia?

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