Not exactly dragonflies, but it may still help:

DOI: 10.1111/j.1365-294X.2006.03184.x

This may help:

Territory Quality, Habitat Selection, and Competition in the Amberwing Dragonfly, Perithemis tenera (Say) (Odonata: Libellulidae): Population Patterns as a Consequence of Individual Behavior

Paul V. Switzer

Journal of the Kansas Entomological Society, Vol. 75, No. 3 (Jul., 2002), pp. 145-157

If you haven't seen it, check out Phil Taylor and Grey Merriam's work on forest damselflies. Neat story - longer wings in more fragmented habitats. e.g., Taylor, P. D., & Merriam, G. (1995). Wing morphology of a forest damselfly is related to landscape structure. Oikos, 43-48. (but Phil has several articles on this theme)

Here you can find some information from tropical assemblages of Dragonflies that may be useful for your purpose (if you are searching for effects on tropical communities). I guess you can find some of these papers here on research gate (look for Paulo de Marco Júnior or Paulo de Marco Jr, one of the researchers of the papers below):

FERREIRAPERUQUETTI, P. S. ; DE MARCO JUNIOR, P. . Efeito da alteração ambiental sobre comunidades de Odonata em riachos de Mata Atlântica de Minas Gerais, Brasil. Revista Brasileira de Zoologia, Curitiba, v. 19, n.2, p. 317-327, 2002.

JUEN, Leandro ; CABETTE, Helena S R ; DE MARCO JUNIOR, P. . Odonate assemblage structure in relation to basin and aquatic habitat structure in Pantanal wetlands. Hydrobiologia (The Hague), v. 579, p. 125-134, 2007.

Nessimian, Jorge L. ; Venticinque, Eduardo M. ; Zuanon, Jansen ; DE MARCO JR, PAULO ; GORDO, Marcelo ; Fidelis, Luana ; D arc Batista, Joana ; JUEN, Leandro . Land use, habitat integrity, and aquatic insect assemblages in Central Amazonian streams. Hydrobiologia (The Hague), v. 614, p. 117-131, 2008.

SILVA, Daniel Paiva ; de Marco, P. ; RESENDE, D C . Adult odonate abundance and community assemblage measures as indicators of stream ecological integrity: A case study. Ecological Indicators, v. 10, p. 744-752, 2010.

DE MARCO JUNIOR, P. . The amazonian Campina dragonfly assemblage: patterns in microhabitat use and behaviour. Odonatologica, v. 27, p. 239-248, 1998.

DE MARCO JUNIOR, P. ; FURIERI, Karina S . The ecology of the bromeliad-dweller Leptagrion perlongum (Odonata: Coenagrionidae). Boletim do Museu de Biologia Mello Leitão, Santa Teresa, ES, v. 11/12, p. 135-148, 2000.

VIANNA, Dana Moiana ; De Marco Júnior, Paulo . Higher-Taxon and Cross-Taxon Surrogates for Odonate Biodiversity in Brazil. Natureza & Conservação, v. 10, p. 34-39, 2012.

JUEN, Leandro ; Marco, Paulo . Dragonfly endemism in the Brazilian Amazon: competing hypotheses for biogeographical patterns. Biodiversity and Conservation (Dordrecht. Online), v. 21, p. 3507-3521, 2012.

JUEN, Leandro ; De Marco, Paulo . Odonate biodiversity in terra-firme forest streamlets in Central Amazonia: on the relative effects of neutral and niche drivers at small geographical extents. Insect Conservation and Diversity (Print), v. 4, p. 265-274, 2011.

All the best, Alexander

You may contact with Mr. Ding Ping. He is a Professor of Zhejiang University and engaged in studies on bird habitat fragmentation. His e-mail: [email protected]>; [email protected]

Thanks everyone..highly appreciate it.

MONTEIRO-JÚNIOR, C.S. ; Juen, L. ; HAMADA, N. . Effects of urbanization on stream habitats and associated adult dragonfly and damselfly communities in central Brazilian Amazonia. Landscape and Urban Planning, v. 127, p. 28-40, 2014.