Patterns of functional diversity along latitudinal gradients of species richness in eleven fish families

Diamond, Jonathan; Roy, Denis

doi:10.1111/geb.13633

Cited by 5 publications

(6 citation statements)

References 77 publications

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“…Other studies on a latitudinal gradient in SR demonstrated differential latitudinal patterns between different taxonomic units (e.g. classes of helminths in Preisser 2019 or families of fish in Diamond and Roy 2023). In our case, this could not be the reason behind the substantial variation of SR along latitudes because this variation has been found even when the analyses were restricted to separate families (Supporting information for three flea families in the north‐eastern quadrant).…”

Section: Discussionmentioning

confidence: 93%

“…As mentioned above, the latitudinal distributions of the SR, PD and FD of fleas and their hosts demonstrate different patterns. The lack of a strong correlation between SR and FD has been found in other taxa Ganade 2001, Diamond andRoy 2023). This suggests that either some species occurring at a latitude band are functionally redundant (Rosenfeld 2002) or that the functional traits selected for the calculation of FD were not informative enough (Llopis-Belinguer et al 2019).…”

Section: Functional Diversitymentioning

confidence: 97%

“…For example, Stuart‐Smith et al (2013) reported that fish assemblages in temperate regions demonstrated higher functional diversity than those in the tropics. On the contrary, Diamond and Roy (2023) found that functional diversity in nine of 11 studied fish families was relatively stable from the equator through the tropics and then sharply decreased. To the best of our knowledge, no study has specifically investigated latitudinal patterns in the functional diversity of parasites, although studies of the relationships between latitude and separate functional traits have been carried out (Poulin and Hamilton 2000, Krasnov et al 2008, van der Mescht et al 2018, Poulin 2021).…”

Section: Introductionmentioning

confidence: 93%

“…Following Diamond and Roy (2023), we modelled the distribution of SR, PD and FD along latitudes with a broken-stick (= piecewise) regression, separately for each quadrant and using absolute values of latitude as explanatory variables. In a broken-stick regression, the explanatory variable is partitioned into intervals with a separate line segment being fitted to each interval.…”

Section: Data Analysesmentioning

confidence: 99%

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Latitudinal distributions of the species richness, phylogenetic diversity, and functional diversity of fleas and their small mammalian hosts in four geographic quadrants

Krasnov,

Grabovsky,

Khokhlova

et al. 2023

Ecography

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We studied latitudinal patterns in the species richness (SR), the phylogenetic diversity (PD), and the functional diversity (FD) of fleas and their mammalian hosts. We asked whether these patterns in either fleas, hosts, or both 1) conform to a classical latitudinal gradient; 2) vary geographically; and 3) differ between fleas and hosts. We also asked whether the patterns of PD and FD follow those of SR. We collected data on the latitudinal distribution of 1022 flea and 900 mammal species from literature sources and calculated the SR, PD, and FD of both groups in 1° latitude bands. Then, we used broken‐stick regression models to analyse separately the latitudinal variation of 1) each diversity facet and 2) fleas and hosts in each geographic quadrant. The classical latitudinal gradient pattern was not found in either fleas or hosts across any facet of diversity or geographic quadrant, except for the PD of fleas in the southeastern quadrant and the FD of hosts in the southwestern quadrant. Latitudinal patterns of the SR, PD and FD of fleas and hosts differed substantially between geographic quadrants. Furthermore, the latitudinal distributions of flea and host SR were similar in three of four quadrants (except the northeastern quadrant), whereas the latitudinal distributions of flea and host PD were similar in the southwestern quadrant only. No similarity in flea versus host FD was revealed. The latitudinal patterns of flea and host PD and FD mostly did not follow those of their SR. We conclude that latitudinal gradients of species richness and phylogenetic and functional diversity appeared not to be universal phenomena. Instead, the latitudinal distributions of these diversity facets represent an interplay of ecological (current and past) and historical processes. For parasites, the processes acting on hosts add another layer of complexity underlying their latitudinal diversity patterns.

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Section: Discussionmentioning

confidence: 93%

Section: Functional Diversitymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 93%

Section: Data Analysesmentioning

confidence: 99%

See 2 more Smart Citations

Latitudinal distributions of the species richness, phylogenetic diversity, and functional diversity of fleas and their small mammalian hosts in four geographic quadrants

Krasnov,

Grabovsky,

Khokhlova

et al. 2023

Ecography

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“…woodland salamanders), whereas the Cambrian explosion of metazoan life famously produced an early burst of morphological disparity and ecological function with relatively low taxonomic diversity [7]. Major taxonomic classes or orders established during the Cambrian might also be expected to exhibit rapid ecological expansion; however, most studies of these clades have quantified morphology as a proxy for ecological functional groups [2,3,8,9], potentially confounding these two biodiversity dimensions [10]. In fact, echinoderms showed an early burst in morphology but not in function [11].…”

Section: Introductionmentioning

confidence: 99%

Cambrian origin but no early burst in functional disparity for Class Bivalvia

et al. 2023

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Both the Cambrian explosion, more than half a billion years ago, and its Ordovician aftermath some 35 Myr later, are often framed as episodes of widespread ecological opportunity, but not all clades originating during this interval showed prolific rises in morphological or functional disparity. In a direct analysis of functional disparity, instead of the more commonly used proxy of morphological disparity, we find that ecological functions of Class Bivalvia arose concordantly with and even lagged behind taxonomic diversification, rather than the early-burst pattern expected for clades originating in supposedly open ecological landscapes. Unlike several other clades originating in the Cambrian explosion, the bivalves' belated acquisition of key anatomical novelties imposed a macroevolutionary lag, and even when those novelties evolved in the Early Ordovician, functional disparity never surpassed taxonomic diversity. Beyond this early period of animal evolution, the founding and subsequent diversification of new major clades and their functions might be expected to follow the pattern of the early bivalves—one where interactions between highly dynamic environmental and biotic landscapes and evolutionary contingencies need not promote prolific functional innovation.

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Temperate Intertidal Ecosystems are Functionally Richer but More Vulnerable to Loss Than Tropical Ecosystems

Murley,

Hovey,

Prince

2024

Ecology and Evolution

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Gastropods are major contributors to a range of key ecosystem services on intertidal rock platforms, supporting trophic structure in both terrestrial and marine contexts and manipulating habitat complexity. However, the functional structure of these assemblages is rarely examined across broad spatial scales. Here, we describe patterns in gastropod functional diversity, redundancy and vulnerability to functional loss across a latitudinal gradient following the west coast of Australia (18° S–34° S). Specifically, we created a trait matrix based on six categorical traits for 186 gastropod species from 39 sites to examine how trait composition varied with latitude. We found there was no latitudinal gradient in either functional richness or distinctiveness despite clear gradients in species richness and taxonomic distinctiveness, which both increased towards the equator. We delineated two distinct functional bioregions, a temperate south (34° S–27° S) and a tropical north (24° S–18° S), and found that the temperate bioregion had greater functional richness and uniqueness but lower redundancy compared to the tropical bioregion. Our findings show that gastropod assemblages in the temperate bioregion are more vulnerable to functional loss as their functional entities are supported by fewer or even single species. Comparatively, the tropical bioregion reported higher redundancies, which could provide a buffer against future change. Understanding the functional structure of intertidal ecosystems is vital as gastropods face the uncertain impacts of coastal tropicalisation, range shifts and sea level rise.

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Patterns of functional diversity along latitudinal gradients of species richness in eleven fish families

Cited by 5 publications

References 77 publications

Latitudinal distributions of the species richness, phylogenetic diversity, and functional diversity of fleas and their small mammalian hosts in four geographic quadrants

Latitudinal distributions of the species richness, phylogenetic diversity, and functional diversity of fleas and their small mammalian hosts in four geographic quadrants

Cambrian origin but no early burst in functional disparity for Class Bivalvia

Temperate Intertidal Ecosystems are Functionally Richer but More Vulnerable to Loss Than Tropical Ecosystems

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