Investigating hydrologic alteration as a mechanism of fish assemblage shifts in urbanizing streams

Roy, Allison H.; Freeman, Mary C.; Freeman, Byron J.; Wenger, Seth J.; Ensign, William E.; Meyer, Judith

doi:10.1899/04-022.1

Cited by 161 publications

(103 citation statements)

References 48 publications

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“…Wang et al (2003) found decreasing quality of fish assemblages with increasing urban land cover, resulting from increases in water temperature and decreases in baseflow, a low-flow metric that represents the main source of streamflow for many streams during summer months. Similarly, Roy et al (2005) found that urbanization in Georgia, USA was associated with a shift in fish assemblages toward habitat generalists (tolerant of standing, lentic conditions) and a loss of stream dependant species. Kelleher et al (2011) found that stream temperature's sensitivity to change was a function of baseflow contribution, indicating that urban areas with rising water temperatures and possibly decreasing baseflows may eventually no longer be habitable for cold water fish species.…”

Section: Introductionmentioning

confidence: 91%

Has urbanization changed ecological streamflow characteristics in Maine (USA)?

Martin

Kelleher

Wagener

2012

Hydrological Sciences Journal

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This paper examines the potential effects of urbanization on streamflow in Maine, USA, from 1950 to 2000. The study contrasts nine watersheds in southern Maine, which has seen steady urban growth over the study period, with nine rural watersheds from northern Maine. Historical population data and current land cover data are used to develop an urbanization score for each watershed. Trends in watershed urbanization over the study period are compared to trends in ecologically relevant streamflow characteristics. The results indicate that trends in northern, rural watersheds are much more consistent than the trends in the southern watersheds. Additionally, trends in the southern watersheds are inconsistent with the hydrological characteristics observed in urban watersheds elsewhere, likely due to the comparatively low level of current urban development in Maine's urban watersheds. Our study suggests that urban areas in Maine have not yet reached an urbanization threshold where streamflow impacts become consistently detectable.Key words urbanization; streamflow; land use; land cover; hydrology; Maine L'urbanisation a-t-elle changé les caractéristiques des débits écologiques dans le Maine (USA)?Résumé Cet article présente une étude des effets potentiels de l'urbanisation sur les écoulements dans le Maine, aux États-Unis, de 1950 à 2000. La comparaison concerne neuf bassins versants du sud du Maine, qui ont connu une urbanisation continue au cours de la période d'étude, et neuf bassins versants ruraux du nord de Maine. Des données démographiques historiques et des données actuelles d'occupation du sol ont été utilisées pour définir un indice d'urbanisation pour chaque bassin versant. Les tendances de l'urbanisation des bassins versants au cours de la période d'étude ont été comparées à l'évolution des caractéristiques des débits écologiquement pertinents. Les résultats indiquent que les tendances dans les bassins versants ruraux du Nord sont beaucoup plus cohérentes que les tendances dans les bassins versants du Sud. En outre, les tendances dans les bassins versants du Sud sont incompatibles avec les caractéristiques hydrologiques observées dans d'autres bassins versants urbains, probablement en raison du niveau relativement faible de développement urbain en cours dans les bassins versants urbains du Maine. Notre étude suggère que les zones urbaines dans le Maine n'ont pas encore atteint un seuil d'urbanisation où les impacts sur les débits deviennent significativement détectables.

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Section: Introductionmentioning

confidence: 91%

Has urbanization changed ecological streamflow characteristics in Maine (USA)?

Martin

Kelleher

Wagener

2012

Hydrological Sciences Journal

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“…J. Lim. 47 (2011) S3-S14 S10 Cuffney et al, 2005;Kennen et al, 2005;Morgan and Cushman, 2005;Roy et al, 2005;Waite et al, 2008).…”

Section: Implementation and Conclusionunclassified

Overview and application of the National Aquatic Ecological Monitoring Program (NAEMP) in Korea

Lee

Hwang

Lee

et al. 2011

Ann. Limnol. - Int. J. Lim.

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-This paper provides an overview of the development and application of the National Aquatic Ecological Monitoring Program (NAEMP) in Korea, which uses biological and habitat-riparian criteria for river/stream and watershed management. Development of NAEMP began in 2003, with recognition by the Korean Ministry of Environment (MOE) of the limitations of applying chemical parameters (e.g., biochemical oxygen demand (BOD)) as the principal targets of water environment management. Ecosystem health criteria under NAEMP were developed from 2003 to 2006. Candidate sites for monitoring were also screened and established across the country. NAEMP was implemented in 2007, and since then a standard protocol of nationwide monitoring based on multi-criteria has been implemented to assess the ecological condition of rivers and streams. The monitoring results indicate that many Korean rivers and streams are severely degraded, with biological conditions that are much worse than their water chemistry suggests. In 2009, 24% of rivers and streams were in classes C (Fair) and D (Poor) for BOD, but more than 71, 53, and 27% were categorized as Fair to Poor according to fish, diatom, and benthic macroinvertebrate assemblages, respectively. NAEMP is promising in that the results have already had great impacts on policy making and scientific research relevant to lotic water environment and watershed management in Korea. In the future, NAEMP results will be used to develop more aggressive regulations for the preservation and restoration of rivers/ streams, riparian buffer areas and watersheds. Another future aim of the NAEMP is to develop aquatic ecological modeling based on the monitoring results.

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“…Wetland ecosystems are impacted at all trophic levels by altered flow regimes with changes reported in the relative importance of primary producers (Nilsson and Svedmark 2002;Vis et al 2007), in invertebrate communities (González-Ortegón and Drake 2012), and fish composition (Poff and Allan 1995;Roy et al 2005;Xenopoulos and Lodge 2006). In aquaculture increasing water exchange normally improves water quality resulting in better survival and growth of the cultured organism (Pillay 1990).…”

Section: Introductionmentioning

confidence: 99%

The effect of water management on extensive aquaculture food webs in the reconstructed wetlands of the Doñana Natural Park, Southern Spain

et al. 2015

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Extensive aquaculture in coastal and estuarine wetlands can support both increased food production and wider ecosystem services when underpinned by effective management to promote productivity and hence food webs that support both commercial species and biodiversity. Changing hydrology, specifically water movement, within wetlands significantly impacts the physico-chemical properties of the water body and hence can be employed to manipulate productivity and alter patterns of recruitment of commercial species and may also transfer non-native species from the supplying water bodies. The reconstructed wetlands of Veta la Palma in the Doñana Natural Park are subjected to either a 1 % or 5 % d -1 water exchange with water drawn from the adjacent Guadalquivir estuary. This site provides an excellent opportunity for examining the effect of water management on the food webs that support both the birdlife and aquaculture activities for which this habitat is managed. Stable isotopes were used to examine food webs in three replicate lagoons under each water management scheme. In lagoons receiving higher water exchange, phytoplankton productivity appeared to be more important than benthic production in supporting food webs. Increased water exchange also changed the shape of the food webs, facilitated the colonisation of at least one non-native species and increased the importance of non-native species in the diets of large commercially harvested fish (> 60 % of seabass diet). Lagoons with high water flows also had between three and four times greater shrimp biomass than those of low flow lagoons. Non-native fauna were opportunistic omnivores, eating marginally more non-natives in lagoons with greater water exchange. Overall non-native cordgrass Spartina densiflora contributed only slightly more to food webs compared with the native reed Phragmites australis, despite the lagoon edge occupancy ratio of 9:1, respectively. Nonnatives also appear to enhance food provision for large predators and wetland birds, by increasing biomass, without competing for resources with native species, supporting the dual management objectives of aquaculture and waterbird conservation.

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Investigating hydrologic alteration as a mechanism of fish assemblage shifts in urbanizing streams

Cited by 161 publications

References 48 publications

Has urbanization changed ecological streamflow characteristics in Maine (USA)?

Has urbanization changed ecological streamflow characteristics in Maine (USA)?

Overview and application of the National Aquatic Ecological Monitoring Program (NAEMP) in Korea

The effect of water management on extensive aquaculture food webs in the reconstructed wetlands of the Doñana Natural Park, Southern Spain

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