Consideration of habitat quality in a river connectivity index for anadromous fishes

Rodeles, Amaia A.; Leunda, Pedro M.; Elso, Josu; Ardaíz, José; Galicia, David; Miranda, Rafael

doi:10.1080/20442041.2018.1544817

Cited by 16 publications

(7 citation statements)

References 48 publications

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“…Thus, Las Nazas is presently the only obstacle downstream of the salmonid monitoring station. However, there are still numerous weirs upstream of this point, which the regional government is also working on to recover river connectivity (Rodeles et al., 2019).…”

Section: Methodsmentioning

confidence: 99%

Effect of restoration measures in Atlantic rivers: A 25‐year overview of sea and riverine brown trout populations in the River Bidasoa

García‐Vega

Leunda

Ganuza

et al. 2020

Fisheries Management Eco

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Effective protection of migratory fish requires long‐term conservation encompassing active restoration and management measures with follow‐up studies. The main findings of long‐term (1995–2019) monitoring of anadromous and potamodromous brown trout Salmo trutta in the River Bidasoa are presented. The main aims were evaluating trout number and median migration date changes, and assessing the effects of management (closures, size limits and quotas, fish stoking) and connectivity measures (fishways and weir removals). Results showed an increasing trend in upstream migrants and decrease in migration dates (earlier migrations). Effects of overlapping measures were difficult to differentiate and were affected by environmental conditions. Statistical analysis demonstrated that fishing closures (2008–2011) and fishway construction (2008) were of great importance, whereas the effect of fish stocking (2003–2012) was variable and unclear. The unexpectedly short‐term effect of three weir removals (2014–2016) may have been due to unusually high discharges in March, affecting the recruitment during previous years.

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Section: Methodsmentioning

confidence: 99%

Effect of restoration measures in Atlantic rivers: A 25‐year overview of sea and riverine brown trout populations in the River Bidasoa

García‐Vega

Leunda

Ganuza

et al. 2020

Fisheries Management Eco

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“…1a). The main stem downstream of Bera village presents a low quality of spawning sites (large portions of channeled water, low availability of spawning substratum and silting) (Gosset et al, 2006), although the nearby upstream area provides several tributaries of various sizes and fragmentation degrees (Rodeles et al, 2019). The mean annual discharge in the study reach was 24.2 m 3 /s and the mean annual water temperature was 13.7°C (MAPAMA, 2019) (Fig.…”

Section: Study Sitementioning

confidence: 96%

“…Garcı ´a-Vega et al, 2020). However, there are still numerous weirs upstream of this point (Rodeles et al, 2019). In addition, the regional government conducted controlled fish stockings with native trout from 2003 to 2012 (GANASA, 2013) as well as exceptional complete closures for trout fishing during the years 2008, 2009, and 2010 in the upper salmonid region of Navarre under a regional law (OF 48/2008) as additional protection measures for the recovery of the salmonid populations (c.f.…”

Section: Study Sitementioning

confidence: 99%

Upstream migration of anadromous and potamodromous brown trout: patterns and triggers in a 25-year overview

et al. 2021

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River fragmentation and alterations in flow and thermal regimes are the main stressors affecting migrating fish, which could be aggravated by climate change and increasing water demand. To assess these impacts and define mitigation measures, it is vital to understand fish movement patterns and the environmental variables affecting them. This study presents a long-term (1995–2019) analysis of upstream migration patterns of anadromous and potamodromous brown trout in the lower River Bidasoa (Spain). For this, captures in a monitoring station were analyzed using Survival Analysis and Random Forest techniques. Results showed that most upstream movements of potamodromous trout occurred in October–December, whereas in June–July for anadromous trout, although with differences regarding sex and size. Both, fish numbers and dates varied over time and were related to the environmental conditions, with different influence on each ecotype. The information provided from comparative studies can be used as a basis to develop adaptive management strategies to ensure freshwater species conservation. Moreover, studies in the southern distribution range can be crucial under climate warming scenarios, where species are expected to shift coldwards.

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“…In this context, 2 groups of articles were considered. A different index was developed by Rodeles et al (2019), related to connectivity of rivers. These authors create a new index to estimate river connectivity and fragmentation by dams, considering habitat accessibility and suitability for breeding of a particular fish species.…”

mentioning

confidence: 99%

“…The first group relates to the development of ecological indicators, including a new ecological indicator(García- Chicote et al 2019), 2 new specific indices(Rodeles et al 2019, and a methodological analysis of known indicators(Sòria-Perpinyà et al 2019) García-Chicote et al (2019). propose the use of zooplankton as a new indicator taxon to estimate ecological quality of reservoirs around Mediterranean rivers.…”

mentioning

confidence: 99%

Ecological quality and conservation status of inland waters

2019

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Assessment of freshwater ecosystems is crucial for measuring their ecological status and providing primary information for their conservation. This editorial introduces a special section of Inland Waters regarding the study of ecological monitoring and biodiversity conservation of inland waters. Papers in this special section of Inland Waters are briefly described and a synthesis of the topic is provided to offer a summary of contents and an overview of the subject matter.

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Consideration of habitat quality in a river connectivity index for anadromous fishes

Cited by 16 publications

References 48 publications

Effect of restoration measures in Atlantic rivers: A 25‐year overview of sea and riverine brown trout populations in the River Bidasoa

Effect of restoration measures in Atlantic rivers: A 25‐year overview of sea and riverine brown trout populations in the River Bidasoa

Upstream migration of anadromous and potamodromous brown trout: patterns and triggers in a 25-year overview

Ecological quality and conservation status of inland waters

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