Aquatic macrophytes in cool aseasonal and seasonal streams: a comparison between Ecuadorian highland and Danish lowland streams

Jacobsen, Dean; Terneus, Esteban

doi:10.1016/s0304-3770(01)00189-9

Cited by 26 publications

(13 citation statements)

References 3 publications

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“…cambarid and astacid crayfishes, Plecoptera, simuliid blackflies, salmonid fish) or show no evident latitudinal gradient (e.g. stream macrophytes; Crow, 1993;Jacobsen and Terneus, 2001). For many groups, the latitudinal gradient has been persistent and is clearly evident in fossil assemblages (Buzas et al, 2002).…”

Section: A Different Scales Of Biodiversitymentioning

confidence: 99%

Are Tropical Streams Ecologically Different from Temperate Streams?

Boulton¹,

Boyero

Covich

et al. 2008

Tropical Stream Ecology

148

128

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Section: A Different Scales Of Biodiversitymentioning

confidence: 99%

Are Tropical Streams Ecologically Different from Temperate Streams?

Boulton¹,

Boyero

Covich

et al. 2008

Tropical Stream Ecology

148

128

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“…Accordingly, primary production, principally by diatoms and aquatic plants, might not be very important in this system, due principally to the densely covered riparian vegetation. This pattern contrasts with those found in most of the other streams studied in the Ecuadorian highlands, which are often autotrophic systems with large biomasses of macrophytes (JACOBSEN and TERNEUS, 2001) and diatoms (JACOBSEN and ENCALADA, 1998) due to the absence of forest at higher altitudes (JACOBSEN and TERNEUS, 2001). The presence of dense riparian forest, and the resulting limitation of light to the stream, regulates its eco-system level functioning and its community assemblage.…”

Section: Discussionmentioning

confidence: 67%

Leaf Litter Dynamics and Its Use by Invertebrates in a High‐Altitude Tropical Andean Stream

Ríos-Touma

Encalada

Fornells

2009

International Review of Hydrobiology

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This study evaluates litter dynamics and its relation to macroinvertebrate communities (assemblages and feeding habits) at Piburja stream (3300 m, Ecuador). Annual litterfall (216 g AFDM/m2 ) was not related to rainfall, but differed significantly between months. Transport of Coarse Particulate Organic Matter (CPOM) did not differ between seasons, but retention was higher during the dry season. Thus, CPOM standing stock was higher in the dry (125.28 g AFDM/m 2 ) compared to the wet season (12.27 g AFDM/m 2 ). Macroinvertebrate richness and diversity were positively related to Coarse Benthic Organic Matter (CBOM) especially during the wet season. Gut content analysis revealed that, regardless of season, CPOM and Fine Particulate Organic Matter (FPOM) were the most important food items in the diet of most invertebrate taxa, including those that are not considered shredders or gathering collectors in the literature. IntroductionInputs of leaf litter from riparian vegetation comprise a significant source of energy and nutrients for headwaters, (SICCAMA et al., 1970;ANDERSON and SEDELL, 1979; WAL-LACE et al., 1997; GRACA, 2001) where they are incorporated into secondary production by decomposers and detritivores (GESSNER et al. 1999;GRAÇA, 2001). In temperate streams, the interactions between organic matter inputs, decomposers, detritivores and physical factors are relatively well understood and have been widely studied (ANDERSON and SEDELL, 1979;SUBERKROPP and WALLACE, 1992;SUBERKROPP and CHAUVET, 1995;WALLACE and WEBSTER, 1996;GRAÇA, 2001). In contrast, tropical streams are understudied, and there is a lack of quantitative information on the inputs, storage and cycling of allochthonous organic matter, even though these streams often drain heavily forested catchments and leaf inputs represent a major potential energy source (GRAÇA et al., 2001a;COLÓN-GAUD et al., 2008). The rates and relative importance of the different pathways through which organic matter passes through in tropical mountain streams is virtually unknown (JACOBSEN, 2008

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“…Barko and Smart 1986;Duarte and Kalf 1990;Szmeja 1994a;Keddy et al 2001;Heegaard et al 2001;Szmeja and Boci¹g 2004), and much less frequently on comparative analyses of such relations in the macroscale, for example in geographically distant populations from the same climate or from different climatic zones (Phillips et al 1983;Jacobsen and Terneusb 2001;Santamaría and García 2004). Comparative studies of aquatic macrophytes in the macroscale could become a source of information on the effect of climate in general or its secondary effect on life strategies and evolution of this plant group.…”

Section: Discussionmentioning

confidence: 99%

Biomass allocation to anchoring structures in the aquatic macrophytes from the subcontinental and Atlantic climates in Europe

et al. 2011

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Biomass allocation to anchoring structures in 10 species of aquatic macrophytes in two types of the cool and humid temperate climate in Europe, subcontionental (NW Poland) and Atlantic (W France), was examined. The study focused on the weight of anchoring organs in Chara delicatula Ag., Ch. fragilis Desv., Juncus bulbosus L., Littorella uniflora (L.) Asch., Luronium natans (L.) Raf., Potamogeton pectinatus L., P. perfoliatus L., P. natans L. and Ranunculus fluitans (Lam.) Wimm., as well as submerged structures in Hydrocharis morsus-ranae L. The plants were collected from 10 geographically distant lakes and 2 rivers with a current velocity of 0.3-0.5 m s -1 . It was assumed that biomass allocation to anchoring structures in rooting macrophytes depends on the time that mechanical forces, which can remove the plants from the occupied area, exert their effect.It was found that, in the Atlantic and subcontinental climates, the ratio between the biomass of underground (or submerged) and above-ground structures (U/A index), calculated for the ramets of Chara fragilis, Hydrocharis morsus-ranae and Ranunculus fluitans, has similar values (p>0.05). Nevertheless, among seven species of Cormophyta, which were anchored in the lake or pond littoral, six (Juncus bulbosus, Littorella uniflora, Luronium natans, Potamogeton pectinatus, P. perfoliatus and P. natans) had higher values of the U/A index in the Atlantic climate than in the subcontinental type (p<0.05). This can be explained by the lack of ice cover and, consequently, a longer time of wave action than in the subcontinental climate.

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Aquatic macrophytes in cool aseasonal and seasonal streams: a comparison between Ecuadorian highland and Danish lowland streams

Cited by 26 publications

References 3 publications

Are Tropical Streams Ecologically Different from Temperate Streams?

Are Tropical Streams Ecologically Different from Temperate Streams?

Leaf Litter Dynamics and Its Use by Invertebrates in a High‐Altitude Tropical Andean Stream

Biomass allocation to anchoring structures in the aquatic macrophytes from the subcontinental and Atlantic climates in Europe

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