Ontogenetic microhabitat shifts in stream invertebrates with different biological traits

Hanquet, D. Legalle

doi:10.1127/0003-9136/2004/0160-0329

Cited by 20 publications

(11 citation statements)

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“…This simplification is based on the assumption that inter-instar variation is so weak that it has a limited influence on ecological processes. However, it is likely that ontogenetic microhabitat shifts play a role in the structure and dynamics of populations (and subsequently on community organization), by adjusting species' requirements to the spatial and temporal dynamics of environmental conditions, including suitable habitat availability and biotic interactions (HANQUET et al, 2004). Ontogenetic habitat shifts have received little attention in stream ecology, calling for more quantitative studies on resource use (including habitat and food) by aquatic animals.…”

Section: Discussionmentioning

confidence: 99%

“…During the last decade, there have been many attempts to model the distribution patterns of a number of species at various spatial scales, with the broader aim to bring out the influence of numerous biotic and abiotic factors and the way they may act (MORRIS, 1987;INOUE and NUNOKAWA, 2002;HANQUET et al, 2004). Detailed quantitative characterisations of preferential environments are needed by both fundamental and applied ecology.…”

Section: Introductionmentioning

confidence: 99%

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Ontogenetic Microhabitat Shifts in the Bullhead,Cottus gobio L.,in a Fast Flowing Stream

Legalle¹,

Mastrorillo²,

Santoul³

et al. 2005

Internat. Rev. Hydrobiol.

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We investigated differences in microhabitat preference curves for bullheads, Cottus gobio L., of different size-classes during low flow periods, and evaluated the influence of such differences on habitat use through Weighted Usable Area (WUA) predictions in relation to river flow in a piedmont stream in Southwest France. Water depth, current velocity, and substratum composition were used to calculate proportional use values for each size-class (SC), and to quantify size-specific microhabitat preferences. Bullhead used non-cohesive and coarse mineral particles (pebbles, cobbles, boulders), but there was a spatial segregation of individuals from different size classes (SC1-SC4). Smaller bullhead (SC1, total length < 60 mm) took refuge under cobbles, significantly preferred shallower areas, and were less prone to select high current velocities than larger bullhead (SC 2 to 4, >60 mm), the latter occurring below (or under) the largest particles, where current velocity is weakened and sand accumulates. SC1 bullhead had a more restricted range for each habitat descriptors, and were thus likely to require a more specific habitat type than other bullhead. The maximum WUA values and the related preferred discharges (0.15-0.75 m 3 s -1) depended on the considered size-class. Our results suggest that ontogenetic niche shifts may play a role in the structure and dynamics of populations, by adjusting species' requirements to the spatial and temporal dynamics of environmental conditions, including abiotic and biotic conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ontogenetic Microhabitat Shifts in the Bullhead,Cottus gobio L.,in a Fast Flowing Stream

Legalle¹,

Mastrorillo²,

Santoul³

et al. 2005

Internat. Rev. Hydrobiol.

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“…organic matter processing, nutrient retention, food resources for vertebrates such as amphibians, fish, or birds). In a given area, the spatial and temporal variability of habitat types are key factors influencing the biodiversity of insect communities (Minshall, 1984;Hanquet et al, 2004), and are reflected in the ecological strategies and adaptation exhibited by species (Townsend, 1989;Townsend et al, 1997). In contrast to the large volume of studies in river ecology, very little research has addressed the population dynamics of pond insects.…”

Section: Introductionmentioning

confidence: 98%

Life‐cycle phenology of some aquatic insects: implications for pond conservation

Cayrou

Céréghino

2005

Aquatic Conservation

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ABSTRACT1. Life-cycles and growth patterns were determined for 21 dominant aquatic insect species in small permanent ponds in an arid, karstic region (SW France, site fr7300909 of the Natura 2000 conservation network). The species studied are widely distributed throughout Europe, but some life-cycle patterns are reported here for the first time.2. The life-history patterns of the 21 species can be divided into five main types: (i) a semivoltine cycle spreading over 2 years; (ii) slow univoltine cycles; (iii) fast univoltine cycles; (iv) multivoltine life-cycles with a long winter generation and two or three summer generations per year; and (v) bivoltine life-cycles with two fast generations per year. Growth was either exponential over the whole developmental period for a given cohort, or divided into two or three successive periods during each of which the growth rate was fairly constant.3. Biodiversity estimates strongly depend on the temporal and spatial scale over which observations are made. Ponds thus provide useful models to show how life-history patterns enable many temporally segregated populations to utilize small ecosystems. Conservation frameworks should therefore carefully consider the time-frame needed to survey ponds, as many species with fast cycles could be overlooked. The spatial scale needed to manage threatened habitats and thus preserve pond networks must be broadened, rather than attempting to target individual water bodies for particular management actions.

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“…Thus, data on the larger RCWs supported the idea that the availability of the preferred mineral case material is a limiting factor for caddisflies at larger scales such as river or habitat types (e.g., Hanna, 1961;Tolkamp, 1980;De Moor, 2005;Takao et al, 2008), whereas data on the other taxa provided no support for this idea. Further support for this idea was provided by a study on a larger RCW (H. siltalai) in a southwestern French river, which shifts the habitat use from coarse bottom/high velocity to finer bottom substrates and lower velocities when coming into its final larval instar (i.e., the builder of the pupal case) (Hanquet et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Mineral grains in caddisfly pupal cases and streambed sediments: assessing resource use and its limitation across various river types

Statzner

2010

Ann. Limnol. - Int. J. Lim.

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-Typically, lotic caddisflies attach their mineral pupal cases to cobbles in riffles, where rapid flows facilitate respiration but also decrease case-building material availability through erosion. Effects of local grain availability on grain quantities in and architecture of (per capita grain size use) pupal cases should be more important in Resident Construction Workers (RCWs, building immediately before pupation with minerals collected near the pupation location) than in Itinerant Construction Workers (ICWs, building months before pupation with minerals collected distantly from the pupation location). I tested these hypotheses analyzing mineral grain sizes in pupal cases and streambed sediments of cobble habitats in riffles of five running water types (headwater to large river in different regions) at baseflow or exceptional droughts. When pupae were abundant, the data supported both hypotheses at the local scale of samples, as grain size use by RCWs (as a group) but not by ICWs increased across all sites with local grain availability and abundant taxa among the former responded with four types of case-architecture modifications to grain size shortage. The data also supported the idea that at larger scales such as river or habitat types, mineral grains may be a limited resource for caddisflies building pupal cases with them. These findings suggest that water currents in streams or near shores of lakes and oceans that erode finer mineral grains can create conflicts in resource requirements for invertebrates that build with locally occurring finer mineral grains and simultaneously need high oxygen renewal rates and coarse grains for attachment.

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Ontogenetic microhabitat shifts in stream invertebrates with different biological traits

Cited by 20 publications

References 0 publications

Ontogenetic Microhabitat Shifts in the Bullhead,Cottus gobio L.,in a Fast Flowing Stream

Ontogenetic Microhabitat Shifts in the Bullhead,Cottus gobio L.,in a Fast Flowing Stream

Life‐cycle phenology of some aquatic insects: implications for pond conservation

Mineral grains in caddisfly pupal cases and streambed sediments: assessing resource use and its limitation across various river types

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