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Status, diversity and trends of the bird communities in Volcanoes National Park and surrounds, Rwanda

Published online by Cambridge University Press:  16 May 2019

MIA A. DERHÉ Open the ORCID record for MIA A. DERHÉ [Opens in a new window] ,
DEO TUYISINGIZE ,
WINNIE ECKARDT ,
FAIDA EMMANUEL  and
TARA STOINSKI
MIA A. DERHÉ*
Affiliation:
Karisoke Research Center, The Dian Fossey Gorilla Fund International, PO Box 105, Musanze, Rwanda.
DEO TUYISINGIZE
Affiliation:
Karisoke Research Center, The Dian Fossey Gorilla Fund International, PO Box 105, Musanze, Rwanda.
WINNIE ECKARDT
Affiliation:
Karisoke Research Center, The Dian Fossey Gorilla Fund International, PO Box 105, Musanze, Rwanda.
FAIDA EMMANUEL
Affiliation:
Karisoke Research Center, The Dian Fossey Gorilla Fund International, PO Box 105, Musanze, Rwanda.
TARA STOINSKI
Affiliation:
Karisoke Research Center, The Dian Fossey Gorilla Fund International, PO Box 105, Musanze, Rwanda.
*
*Author for correspondence; e-mail: [email protected]
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Summary

The Volcanoes National Park (VNP) in Rwanda, part of the Virunga massif in the Albertine Rift region, boasts some of Rwanda’s best remaining natural vegetation and is home to many endangered and endemic species. The park has suffered from high levels of degradation and destruction, reducing in size by 50% during the 1960s and 1970s, and remains under threat from illegal activities, human population pressure and climate change. This study is the first to investigate the status and trends of bird communities in the VNP, using a multi-year dataset. We use a five-year dataset, totalling over 3,200 point-counts, both within and around the VNP, to assess the conservation value of the VNP for birds in comparison with other national parks and non-protected areas. We assess bird communities and population trends within and around the parks and identify important habitat factors for birds within the VNP. We found that the VNP hosts a unique bird community compared to other localities, with several Albertine Rift endemics and threatened species occurring in the VNP. Hagenia/ Hypericum woodland, herbaceous vegetation, brush ridge and mixed forest host the highest levels of bird diversity in the VNP, whilst the park’s waterbodies provide key habitat for the endangered Albertine Rift endemic Grauer’s Swamp-warbler (Bradypterus graueri). Elevation had a negative effect on bird diversity in the VNP, whilst the basal area of dead trees, Hagenia and vines had a positive effect. Both inside and outside the VNP, there was a significant decline in abundance and species richness over the sampling years; however, we advocate for further monitoring to confirm these trends. Based on our findings, we recommend effective, targeted management of key habitats for birds within the park, including those identified in this study, in order to mitigate bird declines and conserve the unique bird communities in the VNP.

Type
Research Article
Information
Bird Conservation International , Volume 30 , Issue 1 , March 2020 , pp. 1 - 20
Copyright
Copyright © BirdLife International 2019 

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Footnotes

1

Present address: Karisoke Research Centre, The Dian Fossey Gorilla Fund International, NR 4 RD 58, B.P. 105 Ruhengeri/Musanze, Rwanda.

2

and The Dian Fossey Gorilla Fund International, 800 Cherokee Ave SE, Atlanta, GA 30315, USA.

References

Aleixo, A. (1999) Effects of selective logging on a bird community in the Brazilian Atlantic forest. Condor 101 537–548.CrossRefGoogle Scholar
Balmford, A., More, J. L, Brook, T. S., Burgess, N., Hansen, L. A., Williams, P. and Rahbek, C. (2001) Conservation conflicts across Africa. Science . 291: 2616–2619.CrossRefGoogle ScholarPubMed
Bartoń, K. (2016) MuMIn: Multi-model inference . R Package 1.15.6.Google Scholar
Bibby, C. J. (1999) Making the most of birds as environmental indicators. Ostrich 70: 81–88.CrossRefGoogle Scholar
Bibby, C. J. (2000) Bird census techniques. San Diego, USA: Academic Press.Google Scholar
BirdLife International (2005) Species factsheets. Birdlife international, Cambridge. Available from http://www.birdlife.org (accessed October 2005).Google Scholar
Böhme, B., Becker, M., Diekkrüger, B. and Förch, G. (2016) How is water availability related to the land use and morphology of an inland valley wetland in Kenya? Physics and Chemistry of the Earth, Parts A/B/C. 93: 84–95.CrossRefGoogle Scholar
Bolker, B. M., Brooks, M. E., Clark, C. J., Geange, S. W., Poulsen, J. R., Stevens, M. H. H. and White, J. S. S. (2009) Generalized linear mixed models: a practical guide for ecology and evolution. Trends Ecol. Evol. 24: 127–135.CrossRefGoogle ScholarPubMed
Brooks, T., Balmford, A., Burgess, N., Fjeldsa, J., Hansen, L. A., Moore, J., Rahbek, C. and Williams, P. (2001) Towards a blueprint for conservation in Africa. BioScience 51: 613–624.CrossRefGoogle Scholar
Brooks, T., Hoffmann, M., Burgess, N., Plumptre, A., Williams, S., Gereau, R. E., Mittermeier, R. A. and Stuart, S. (2004) Eastern Afromontane. Pp. 241–242 in Mittermeier, R. A., Robles-Gil, P., Hoffmann, M., Pilgrim, J. D., Brooks, T. M., Mittermeier, C. G., Lamoreux, J. L. and Fonseca, G., eds. Hotspots revisited: Earth’s biologically richest and most endangered ecoregions. Second edition. Mexico: Cemex.Google Scholar
Burgess, N., D’Amico Hales, J., Underwood, E., Dinerstein, E., Olson, D., Itoua, I., Schipper, J., Ricketts, T., Newman, K. (2004) Terrestrial ecoregions of Africa and Madagascar: a continental assessment . Washington DC: Island Press.Google Scholar
Bush, G. K., Ikirezi, M., Daconto, G., Gray, M. and Fawcett, K., (2010) Assessing impacts from community conservation interventions around Parc National des Volcans, Rwanda. Study funded by the Rwanda Environment Management Authority (REMA).Google Scholar
Butchart, S. H., Walpole, M., Collen, B., Van Strien, A., Scharlemann, J. P., Almond, R. E., Baillie, J. E., Bomhard, B., Brown, C., Bruno, J. and Carpenter, K. E. (2010) Global biodiversity: indicators of recent declines. Science: 1187512.Google ScholarPubMed
Canaday, C. (1996) Loss of insectivorous birds along a gradient of human impact in Amazonia. Biol. Conserv. 77: 63–77.CrossRefGoogle Scholar
Canterbury, G. E., Martin, T. E., Petit, D. R., Petit, L. J. and Bradford, D. F. (2000) Bird communities and habitat as ecological indicators of forest condition in regional monitoring. Conserv. Biol. 14: 544–558.CrossRefGoogle Scholar
Crick, H. Q. (2004) The impact of climate change on birds. Ibis 146: 48–56.CrossRefGoogle Scholar
Dormann, C. F., Elith, J., Bacher, S., Buchmann, C., Carl, G., Carré, G., Marquéz, J. R. G., Gruber, B., Lafourcade, B., Leitão, P. J., Münkemüller, T., Mcclean, C., Osborne, P. E., Reineking, B., Schröder, B., Skidmore, A. K., Zurell, D. and Lautenbach, S. (2013) Collinearity: A review of methods to deal with it and a simulation study evaluating their performance. Ecography 36: 27–46.CrossRefGoogle Scholar
Dunn, R. R. (2004) Recovery of faunal communities during tropical forest regeneration. Conserv. Biol. 18: 302–309.CrossRefGoogle Scholar
Dye, P. and Versfeld, D. (2007) Managing the hydrological impacts of South African plantation forests: An overview. Forest Ecol. Manage. 251: 121–128.CrossRefGoogle Scholar
Fischer, E. and Killmann, D. (2008) Plants of Nyungwe National Park, Rwanda . Koblenz, Germany: Koblenz Geographical Colloquia.Google Scholar
Frazer, G. W., Canham, C. D. and Lertzman, K. P. (2000) Gap light analyzer, version 2.0: Imaging software to extract canopy structure and gap light transmission indices from true-colour fisheye photographs; users’ manual and program documentation. Burnaby, British Columbia: Simon Fraser University.Google Scholar
Gibbs, J. P., Hunter, M. L. Jr and Melvin, S. M. (1993) Snag availability and communities of cavity nesting birds in tropical versus temperate forests. Biotropica: 25: 236–241.CrossRefGoogle Scholar
Gray, M., Roy, J., Vigilant, L., Fawcett, K., Basabose, A., Cranfield, M., Uwingeli, P., Mburanumwe, I., Kagoda, E. and Robbins, M. M. (2013) Genetic census reveals increased but uneven growth of a critically endangered mountain gorilla population. Biol. Conserv. 158: 230–238.CrossRefGoogle Scholar
Grueter, C., Ndamiyabo, F., Plumptre, A. J., Abavandimwe, D., Mundry, R., Fawcett, K. A., Robbins, M. M. (2013) Long-term temporal and spatial dynamics of food Availability for endangered Mountain Gorillas in Volcanoes National Park, Rwanda. Am. J. Primatol. 75: 267–280.CrossRefGoogle ScholarPubMed
Harris, J. B. C., Dwi Putra, D., Gregory, S. D., Brook, B. W., Prawiradilaga, D. M., Sodhi, N. S., Wei, D. and Fordham, D. A. (2014) Rapid deforestation threatens mid-elevational endemic birds but climate change is most important at higher elevations. Divers. Distrib. 20: 773–785.CrossRefGoogle Scholar
Hill, J. K. and Hamer, K. C. (2004) Determining impacts of habitat modification on diversity of tropical forest fauna: the importance of spatial scale. J. Appl. Ecol. 41: 744–754.CrossRefGoogle Scholar
Hulme, M., Doherty, R., Ngara, T., New, M. and Lister, D. (2001) African climate change: 1900-2100. Climate Res. 17: 145–168.CrossRefGoogle Scholar
Huntley, B., Collingham, Y. C., Green, R. E., Hilton, G. M., Rahbek, C. and Willis, S. G. (2006) Potential impacts of climatic change upon geographical distributions of birds. Ibis 148: 8–28.CrossRefGoogle Scholar
IPCC (2007) Climate change 2007: Synthesis report. Cambridge, UK: Cambridge University Press.Google Scholar
Johns, A. D. (1991) Responses of Amazonian rain-forest birds to habitat modification. J. Trop. Ecol. 7: 417–437.CrossRefGoogle Scholar
Jonsell, M., Weslien, J. and Ehnström, B. (1998) Substrate requirements of red-listed saproxylic invertebrates in Sweden. Biodivers. Conserv. 7: 749–764.CrossRefGoogle Scholar
Kanowski, J., Catterall, C. P., Freebody, K., Freeman, A. N. D. and Harrison, D. A. (2010) Monitoring revegetation projects in rainforest landscapes. Toolkit version 3. Cairns: Reef and Rainforest Research Centre Limited.Google Scholar
Kattan, G. H. and Franco, P. (2004) Bird diversity along elevational gradients in the Andes of Colombia: area and mass effects. Global Ecol. Biogeogr. 13: 451–458.CrossRefGoogle Scholar
Kayitete, L., van der Hoek, Y., Nyirambangutse, B. and Derhé, M. A. (2019) Observations on regeneration of the keystone plant species Hagenia abyssinica in Volcanoes National Park, Rwanda. Afr. J. Ecol.CrossRefGoogle Scholar
Kluge, J., Kessler, M. and Dunn, R. R. (2006) What drives elevational patterns of diversity? A test of geometric constraints, climate, and species pool effects for pteridophytes on an elevational gradient in Costa Rica. Global Ecol. Biogeogr. 15: 358–371CrossRefGoogle Scholar
Kluthe, B. G. (2016) Eucalyptus in Kenya; Impacts on environment and society. Doctoral dissertation, University of Arkansas.Google Scholar
Lane, P. N., Morris, J., Ningnan, Z., Guangyi, Z., Guoyi, Z. and Daping, X. (2004) Water balance of tropical eucalypt plantations in south-eastern China. Agricult. For. Meteorol. 124: 253–267.CrossRefGoogle Scholar
Lange, S., Bussmann, R. W. and Beck, E. (1997) Stand structure and regeneration of the subalpine Hagenia abyssinica forests of Mt. Kenya. Bot. Acta 110: 473–480.CrossRefGoogle Scholar
Lomolino, M. V. (2000) A call for a new paradigm of island biogeography. Global Ecol. Biogeogr. 9: 1–6.CrossRefGoogle Scholar
Machac, A. et al. (2011) Elevational gradients in phylogenetic structure of ant communities reveal the interplay of biotic and abiotic constraints on diversity. Ecography 34: 364–371.CrossRefGoogle Scholar
Malcolm, J. R., Liu, C., Neilson, R. P., Hansen, L. and Hannah, L. E. E. (2006) Global warming and extinctions of endemic species from biodiversity hotspots. Conserv. Biol. 20: 538–548.CrossRefGoogle ScholarPubMed
Mason, D. (1996) Responses of Venezuelan understory birds to selective logging, enrichment strips, and vine cutting. Biotropica 28: 296–309.CrossRefGoogle Scholar
McCain, C. M. (2007) Could temperature and water availability drive elevational species richness patterns? A global case study for bats. Global Ecol. Biogeogr. 16: 1–13.CrossRefGoogle Scholar
McCain, C. M. (2009) Global analysis of bird elevational diversity. Global Ecol. Biogeogr. 18: 346–360.CrossRefGoogle Scholar
McNeilage, A. (2001) Diet and habitat use of two mountain gorilla groups in contrasting habitats in the Virungas. Pp 265–292 in Robbins, M. M., Sicotte, P. and Stewart, K. J., eds. Mountain gorillas: three decades of research at Karisoke. Cambridge, UK: Cambridge University Press.CrossRefGoogle Scholar
Michel, N. L., Robinson, W. D. and Sherry, T. W. (2015) Liana – bird relationships: A review. Pp. 362–397 in Schnitzer, S., Bongers, F., Burnham, R. and Putz, F., eds. Ecology of lianas. Hoboken, NJ: Wiley-Blackwell Publishing.Google Scholar
Milner, J. M. and Harris, S. (1999) Habitat use and ranging behaviour of tree hyrax, Dendrohyrax arboreus, in the Virunga Volcanoes, Rwanda. Afr. J. Ecol. 37: 281–294.CrossRefGoogle Scholar
Murererehe, S. (2000) Collecte et analyse de données pour l’aménagement durable des forêts -joindre les efforts nationaux et internationaux; Etat des ressources forestières au Rwanda. Technical Report. Rome: FAO.Google Scholar
Nakagawa, S. and Schielzeth, H. (2013) A general and simple method for obtaining R2 from generalized linear mixed-effects models. Methods Ecol. Evol. 4: 133–142.CrossRefGoogle Scholar
Newton, I. (1994) The role of nest sites in limiting the numbers of hole-nesting birds: a review. Biol. Conserv. 70: 265–276.CrossRefGoogle Scholar
Newton, I. (1998) Population limitation in birds. San Diego, California: Academic Press.Google Scholar
Niemelä, T., Renvall, P. and Hjortstam, K. (1998) Hagenia abyssinica and its fungal decayers in natural stands. Edinburgh J. Bot . 55: 473–484.CrossRefGoogle Scholar
Nobis, M. and Hunziker, U. (2005) Automatic thresholding for hemispherical canopy-photographs based on edge detection. Agricult. For. Meteorol. 128: 243–250.CrossRefGoogle Scholar
Nsanzurwimo, A. (2004) Etude analytique des communautés de Bamboo à Sinarundinaria alpina en rapport avec leur milieu écologique (cas du Parc National des Volcans). Mémoire, Butare, Université National du Rwanda.Google Scholar
Ohlemüller, R., Anderson, B. J., Araújo, M. B., Butchart, S. H., Kudrna, O., Ridgely, R. S. and Thomas, C. D. (2008) The coincidence of climatic and species rarity: high risk to small-range species from climate change. Biol. Lett. 4: 568–572.CrossRefGoogle ScholarPubMed
Olson, D. M. and Dinerstein, E. (1998) The global 200: a representation approach to conserving the earth’s most biologically valuable ecoregions. Conserv. Biol. 12: 502–515.CrossRefGoogle Scholar
Owiunji, I., Nkuutu, D., Kujirakwinja, D., Liengola, I., Plumptre, A., Nsanzurwimo, A., Fawcett, K., Gray, M. and McNeilage, A. (2005) The biodiversity of the Virunga Volcanoes . Technical Report www.wcs.org/Albertine_Rift.Google Scholar
Öztürk, M., Hakeem, K. R., Faridah-Hanum, I. and Efe, R., eds. (2015) Climate change impacts on high-altitude ecosystems. Springer.CrossRefGoogle Scholar
Peres, C. A. (1999) Tropical forest disturbance and dynamics in Southeast Asia. Trends Ecol. Evol. 14: 217–218.Google Scholar
Pickford, M. (1990) Uplift of the roof of Africa and its bearing on the evolution of mankind. Human Evol . 5: 1–20.CrossRefGoogle Scholar
Picton Phillipps, G. and Seimon, A. (2010) Potential climate change impacts in conservation landscapes of the Albertine Rift. Wildlife Conservation Society Albertine Rift Climate Assessment. White Paper Report, (2).Google Scholar
Plumptre, A. J. (1991) Plant-herbivore dynamics in the Birungas. Ph.D. thesis. University of Bristol, UK.Google Scholar
Plumptre, A. J. (1993) The effects of trampling damage by herbivores on the vegetation of the Parc National des Volcans, Rwanda. Afr. J. Ecol. 32: 115–129.CrossRefGoogle Scholar
Plumptre, A. J., Masozera, M. and Vedder, A. (2001) The impact of civil war on the conservation of protected areas in Rwanda. Washington, DC: Biodiversity Support Program.Google Scholar
Plumptre, A. J., Behangana, M., Davenport, T. R. B., Kahindo, C., Kityo, R., Ndomba, E., Nkuutu, D., Owiunji, I., Ssegawa, P. and Eilu, G. (2003) The biodiversity of the Albertine Rift . Albertine Rift Technical Report N-3 www.wcs.org/Albertine_RiftGoogle Scholar
Putz, F. E., Sirot, L. K. and Pinard, M. A. (2001) Tropical forest management and wildlife: silvicultural effects on forest structure, fruit production, and locomotion of arboreal animals. Pp. 11–34 in Fimbel, R. A., Grajal, A. and Robinson, G., eds. The cutting edge: conserving wildlife in logged tropical forests. New York, USA: Columbia University Press.Google Scholar
R Core Team (2017) R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing.Google Scholar
Rahbek, C. (1995) The elevational gradient of species richness – a uniform pattern. Ecography 18: 200–205.CrossRefGoogle Scholar
Rahbek, C. (1997) The relationship among area, elevation and regional species richness in Neotropical birds. Am. Nat. 149: 875–902.CrossRefGoogle ScholarPubMed
Ramsar, (2002) Resolution VIII.3 on climate change and wetlands. Gland, Switzerland: Ramsar Convention Secretariat. Accessed on 25 February 2008 at http://www.ramsar.org/res/key_res_viii_03_e.htmlGoogle Scholar
Robbins, M. M., Gray, M., Fawcett, K. A., Nutter, F., Uwingeli, P., Mburanumwe, I., Kagoda, E., Basabose, A., Stoinski, T. S., Cranfield, M. R., Byamukama, J., Spelman, L. H. and Robbins, A. M. (2011) Extreme conservation leads to recovery of the Virunga mountain gorillas. PLoS ONE 6: e19788.CrossRefGoogle ScholarPubMed
Robbins, C. S., Sauer, J. R., Greenberg, R. S. and Droege, S. (1989) Population declines in North American birds that migrate to the Neotropics. Proc. Natl. Acad. Sci. 86: 7658–7662.CrossRefGoogle ScholarPubMed
Rosenzweig, M. L. (1995) Species diversity in space and time . Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Rowe, R. (2009) Environmental and geometric drivers of small mammal diversity along elevational gradients in Utah. Ecography 32: 411–422.CrossRefGoogle Scholar
Runyambo, I. (2006) Contribution à l’étude de la structure et de la dynamique de la végétation du marais du lac Ngezi au Parc national des Volcans. Memoir. Butare: National University of Rwanda.Google Scholar
Runyambo, I. (2009) Recent changes in vegetation structure of Ngezi swamp in the face of climate change impact: Case of Volcanoes Biosphere Reserve, Rwanda. Association pour la Conservation de la Nature au Rwanda (ACNR). A Report for MacArthur Foundation.Google Scholar
Samuelsson, J., Gustafsson, L. and Ingelög, T. (1994) Dying and dead trees. A review of their importance for biodiversity.Google Scholar
Sanders, N. J. and Rahbek, C. (2012) The patterns and causes of elevational diversity gradients. Ecography 35: 1–3.CrossRefGoogle Scholar
Sarmiento, E. E, Butynski, T. M and Kalina, J. (1996) Gorillas of Bwindi impenetrable forest and the Virunga volcanoes: Taxonomic implications of morphological and ecological differences. Am. J. Primatol. 40: 1–21.3.0.CO;2-1>CrossRefGoogle ScholarPubMed
Schnitzer, S. A. and Bongers, F. (2002) The ecology of lianas and their role in forests. Trends Ecol. Evol. 17: 223–230.CrossRefGoogle Scholar
Seburanga, J. L., Nsanzurwimo, A. and Folega, F. (2014) Status of Hagenia forest in the Parc National des Volcans, Rwanda: a review of historical records. J. Ecol. Natur. Environ. 6: 170–182.CrossRefGoogle Scholar
Sekercioglu, C. H., Schneider, S. H., Fay, J. P. and Loarie, S. R. (2008) Climate change, elevational range shifts, and bird extinctions. Conserv. Biol. 22: 140–150.CrossRefGoogle ScholarPubMed
Shoo, L. P., Williams, S. E. and Hero, J. M. (2005) Climate warming and the rainforest birds of the Australian Wet Tropics: Using abundance data as a sensitive predictor of change in total population size. Biol. Conserv. 125: 335–343.CrossRefGoogle Scholar
Stattersfield, A. J., Crosby, M. J., Long, A. J. and Wege, D. C. (1998) Endemic Bird Areas of the World: priorities for biodiversity conservation. Cambridge, UK: BirdLife International. (BirdLife International Conservation series No. 7).Google Scholar
Stotz, D. F., Fitzpatrick, J. W., Parker, T. A. and Moskovits, D. K. (1996) Neotropical birds. Ecology and conservation. Chicago: University Chicago Press.Google Scholar
Sutherland, W. J. ed. (2006) Ecological census techniques: a handbook. Cambridge, UK: Cambridge University Press.CrossRefGoogle Scholar
Thiollay, J. M. (1992) Influence of selective logging on bird species-diversity in a Guianan rain-forest. Conserv. Biol. 6: 47–63.CrossRefGoogle Scholar
Troupin, G. (1982) Flore des plantes ligneuses du Rwanda: Hagenia abyssinica (Bruce) J. F. Gmelin. Butare, Rwanda: Institut National de Recherche ScientifiqueGoogle Scholar
Wang, X. P. et al. (2009) Relative importance of climate vs local factors in shaping the regional patterns of forest plant richness across northeast China. Ecography 32: 133–142.CrossRefGoogle Scholar
Watts, D. P. (1983) Foraging strategy and socioecology of mountain gorillas (Pan gorilla beringei). Ph.D. thesis. Chicago: University of Chicago.Google Scholar
Watts, D. P. (1998) Long-term habitat use by Mountain Gorillas (Gorilla gorilla beringei). 2. Reuse of foraging areas in relation to resource abundance, quality, and depletion. Internatn. J. Primatol. 19: 7002.Google Scholar
Weber, A. W. (1987) Ruhengeri and its resources: an environmental profile of the Ruhengeri Prefecture . Kigali: ETMA/USAID.Google Scholar
Williams, J. W., Jackson, S. T. and Kutzbach, J. E. (2007) Projected distributions of novel and disappearing climates by 2100 AD. Proc. Natl. Acad. Sci. 104: 5738–5742.CrossRefGoogle ScholarPubMed
Wong, M. (1985) Understory birds as indicators of regeneration in a patch of selectively logged West Malavsian rain forest. In Diamond, A. W. and Lovejoy, T., eds. Conservation of tropical forest birds . Cambridge, UK: International Council for Bird Preservation. (Technical Publication No. 4).Google Scholar
Zedler, J. B. and Kercher, S. (2005) Wetland resources: status, trends, ecosystem services, and restorability. Annu. Rev. Environ. Resour. 30: 39–74.CrossRefGoogle Scholar
Zuur, A. F., Ieno, E., Walker, N., Saveliev, A. and Smith, G. (2009) Mixed effects models and extensions in ecology with R . New York: Springer Science and Business Media.CrossRefGoogle Scholar
Zuur, A. F., Ieno, E. N., Elphick and, C. S. (2010) A protocol for data exploration to avoid common statistical problems. Methods Ecol. Evol. 1: 3–14.CrossRefGoogle Scholar
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