Amphibians and Reptile S of the Grand Calumet River Basi N

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Amphibians and Reptile S of the Grand Calumet River Basi N 1999/2000 . Proceedings of the Indiana Academy of Science l08/109 :105—12 1 AMPHIBIANS AND REPTILE S OF THE GRAND CALUMET RIVER BASI N Kenneth S . Mierzwa : TAMS Consultants, Suite 3200, 180 North Stetson, Chicago . Illinois 60601 US A Spencer A . Cortwright : Department of Biology, Indiana University Northwest, Gary . Indiana 46408 US A David A . Beamer : Department of Biology, Indiana University Northwest, Gary , Indiana 46408 US A ABSTRACT . The Grand Calumet River and its associated dune and swale areas of northwest Indian a is a globally unique ecosystem . However, it has been nearly obliterated by indus trial, commercial, an d residential development . Remnant natural areas, some protected, some not, harbor an incredibly divers e array of amphibians and reptiles . This area features species whose ranges converge from all four compas s directions, hence generating the impressive diversity . Clean up of the Grand Calumet River and improve - ment of riparian areas should help maintain this diversity . In addition, preservation of unprotected site s and well-planned habitat linkages will further enhance preservation of this diversity for generations t o come . Keywords : ( ;rand Calumet River, Indiana, amphibians, reptiles, habitat quality, habitat protection, dun e and swal e The ridge and swale area (Fig . I) surround- vices unique opportunities for preservatio n ing the Grand Calumet River is home to on e and restoration . of the more diverse assemblages of amphibi- In addition to the immediate riparian area . ans and reptiles in northwest Indiana . Eac h the contiguous ridge and swale sites were in- time Lake Michigan receded, a dune ridg e cluded in the study . Since amphibians and rep- formed trapping an elongate wetland behin d tiles are less mobile than many other verte- it . Well ove r 100 ridges originally existed i n brates and less likely to colonize remote or what is now Gary, East Chicago, and Ham- isolated habitats, existing centers of hiodiver- mond, Indiana . Here, as a result of recent geo- sity must be inventoried . and the data factore d logic and climatic events, species more typica l into management decisions . Information avail - of areas to the north, south, east, and wes t able from recent inventories and older muse - come together and occur in close proximity . um specimens and publications supplemente d Surprisingly, despite the long and intensive in- our own field experience in the area . Nomen- dustrial history of the region, several relative- clature follows Collins (1990), except the for ly pristine natural areas have survived alon g the more recent elevation of Rufo Pubeler-i to with most of their salamander, frog, turtle, liz- specific status (Sullivan et al . 1996) . ard, and snake species . The survival of these PRE-SETTLEMENT CONDITION S natural areas and their associated faunas pro - Origin of the herpetofaunal assem- blage .—Presumahly, amphibians and reptile s C~uirnrociclr ess : Department of Biology . Easter n entered what is now the Grand Calumet Rive r Carolina University, Greenville, North Carolin a area shortly after the end of the Wisconvina n 27858 USA. glaciation . Remains of the cold-tolerant tur - 105 1 06 PROCLFI)INGS OF "fIlL INi)[A1 ACADEMY OF SCIENC E ties, (heft~drer serpentirza and Chrvscmys pie- ta, have been found in association with mas- todon hones in southeastern Michigan an d east-central Indiana (t-Tolman Andrew s 1994) at sites dated to 13,000—11,000 year s before present (ybp) . Other species that today have northern distributions also must hav e been present in the boreal forest that covered northwest Indiana at that time . However, th e present-day site of the Grand Calumet Rive r was still covered by the waters of post-glacia l Lake Chicago. Subsequent fluctuation of lak e levels (Chrzastowski Thompson 1992 ; Chrzastowski et af . 1991) and climate chang e (Ahearn Kapp 1984 ; Ebbers 1984) pro- foundly influenced the sequence and locatio n of later colonization events . The diverse herpetofauna includes northern elements (e .g. the blue-spotted salamander, Aiubvstrnrta laterale, and Blandings turtle , Emsxdoidea blandingii) and eastern species (e .g ., the eastern newt, Notophthulmus viri- desceos, and the green frog, Rana cicrmitans) . Figure I . —A 1939 aerial photo a section of These species may have been present since the Grand Calumet River in west Gary and eas t Flammond (westernmost north-south road is Clin e not long after glacial retreat, and they persis t Avenue, the border between the two cities) . The today in moist woodland and wetland habitats . numerous rows of dune and swale are evident . LI .S . Species of western or southern origin an d 20 is the southernmost east-west roadway, and U .S. characteristic of warmer or drier condition s 12 angles from the southeast corner of the photo to (e .g. Fowles toad, Hofo .fowleri, the six-lined the northwest corner. The Grand Calumet River racerunner, Cnemidophorns sezlinea/us, an d (dark curved line) snakes through the bottom third the western slender glass lizard, Ophisaoru s of the photo . Ivanhoe Nature Preserve is the second atle;uwlus) presumably entered the. Calume t and third "blocks" of swales northeast from th e intersection of Cline Avenue and U.S. 20 . The region during a hypsithermal interval (Smith "hooked" dune ridges to the north of the Gran d Minton 1957) about 6200 to 5050 yb p Calumet River mark successive mouths of the rive r (Ahearn Kapp 1984) . Today, these specie s as the mouth migrated eastward with the develop - inhabit xeric dunes or open grasslands . ment of each new ridge. Photo and descriptio n The parallel sand ridges north of the Gran d courtesy of Steve Brown, Indiana Geological Sur- Calumet River did not form until about 2500 — vey . 1000 ybp (Thompson 1992) . This landscape is very young, even for our recently glaciate d assemblage of amphibians and reptiles wa s region . Amphibian and reptile populations in- present at the time of settlement . habiting dune and swale habitat must hav e Sources of information .—Any reconstruc- colonized new wetlands and ridges as the y tion of the pre-settlement herpetofauna mus t formed . rely in part on somewhat later sources . The In the 1830s, the Grand Calumet River wa s first museum specimens form the area wer e a shallow, sluggish body of water bordered b y collected in 1902, but no records of amphib- emergent marshes . Nearby upland ridges were ians or reptiles in the Grand Calumet Rive r usually open sand savanna interspersed wit h area were published prior to Shelford (1913) , areas of dry-mesic to wet sand prairie . Adja- who listed species at a few localities west of cent swales also were diverse, with open wa- Gary . ter, marsh, and shrub swamp communities . Combining early published sources, speci- Because of the diversity of available habita t mens in area museum collections, and knowl- and the unusual history of the areas, a unique edge based on the best remaining natural areas NIIERLWA ET Al . .—AMPHIBIANS AND REPTILES 10 7 and examples of particular habitat types, a po- 'table I . Potential amphibian and reptile spe- tential total of 34 species of pre-settlemen t cies during presettlemcnt times in the Grand Calu - amphibians and reptiles has been compile d met River basin. All authors of species arc as i n (Table 1) . The sluggish open-water channel o f Minton (2001) . the Grand Calumet River must have been in- Fogs and toad s habited by a variety of fully aquatic species . Acris crepitan .s b/arulurrdi (Northern cricke t Snapping turtles (Che//ia s. serpent/nu) , frog) musk turtles (Stet—no/hems odorants), and Bair) cunt riconus (American toad ) painted turtles (Chrysenru .s pieta ntarginala ) Bafo fowlori (l owler's toad ) were certainly present in the lagoons by Mill- HYlct rersica/Or (Gray tree frog ) er, now in northeast Gary, in the early part o f lseudacris crucifer crucifer (Spring peeper ) thas century, because they are documented b y Pscutlacris trise rich triseriata (Western choru s nauseam specimens . Shelford (1913) reported frog) the three species listed ahove, as well as ma p Rana catesbeiana (Bullfrog ) turtles (Grapternys gcographica), in pond s Rana clamitans me/auotcr (Green frog ) Rana pipiens (Northern leopard frog ) north of the river at Clark Street (Sites I I an d 12 in Fig . 2), and these species may have bee n Salamanders present in the channel as well . Mudpuppies Ambv .stoma /aterale (Blue-spotted salamander ) (Nerturus marulosus) still occur in Wolf Lake Ambsutomo 6grinum tigrinunt (Eastern tiger ,sal - (straddles the Indiana/Illinois state line i n amander) ,/ecturus macn/osus northwest Hammond) and in Lake Michigan ; (Mudpuppy ) NotophthaInus r~iridesccns they may have entered the river before sever e (Eastern red-spotted newt ) water degradation . Plethodon cinemas (Redback salamander ) Riparian wetlands probably provided for- aging areas for all of the above species, as Snakes well as, semi-aquatic species such as bullfrog s Co/abet- constrictor (Blue racer) (Rana (ates/1 iana), green frogs (Rana clarn- Tlaphe vulpina rulpina (Western fox snake ) Heierodoa platirhinos ittuts titelcrnola), Blanding's turtles (Gmvdoi- (Eastern hognose snake ) Lconpropeltis triattgu/um (Milk snake ) dect hlctdingii), and common water snake s Nerodia .sipcdon (Connnon water snake) (Ne rodict sipea/an) . Terrestrial species may Opheodrs-.5 Ycrrtalis (Smooth green snake ) have entered riparian areas on occasion, bu t Regina septenn uittata (Queen snake ) did not permanently reside there . Storer/a dekcnn rrrig/uonrnr (Midland brow n Swales adjacent to the river provided hah- snake) itat for a rich array of species . Salamanders Thamnop/n .s prom nus prariunts (Western ribbo n and frogs used these wetlands for breeding , snake) and several species of turtles and snakes prob- 7luunnophi5 rot/ix rat/i_x (Plains garter snake ) ably reached maximum abundance there .
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