“…First approximation (32): Andranovich (1995), Beierle (2000), Booher and Innes (2002), Bryson and Crosby (1992), Chrislip and Larson (1994), Coggins (1999), Daniels and Walker (2001), Echeverria (2001), Fawcett et al (1995), Freeman (1997, Fung and Wright (2001), Gray (1989), Healey (1996Healey ( , 2003, Booher (1999a, 1999b), Kraft and Johnson (1999), Langbein (2002), Lee (2003), Lober (1997), Nelson and Weschler (1998), Ozawa (1993), Reilly (1998Reilly ( , 2001), Schedler and Glastra (2001), Schuckman (2001), Smith (1998), Susskind and Cruikshank (1987), Takahashi and Smutny (2002), Thomas (1995), Weber (2003), and Wondolleck and Yaffee (2000).…”