The Salt Lake Tribune Hotter Climate Is Linked to Insect Attacks BYLEE SIEGEL THE SALT LAKE TRIBUNE Insects became morediverse in southwestern Wyoming and did more damageto plants when the climate warmed up 53 million years ago, Smithsonian Institution researchers reported today. Their study suggests climateis NATION Friday, June 25, 1999 SPECIALS that Help You Avoid ersonat land am Fjrinanciai veny ation.) Per jal Dehydration! You can sweat away 2 quarts of water per hour when you’re extremely active on a hot day! Camelbak” Hydration |) Systems help keep you constantly and comfortably cool and hydrated so you can concentrate on having fun! | fy am | ETT] coasgnc™ - (QUEEN M.u.0.€."|- QE] W.a.w.g."]| the key reason insect and plant Fully Insulated to populations are more diverse in the tropics than in temperate zones. KeepLiquids Hot of bugs munching through crops? Wicking Mesh Keeps Back Plants probably will suffer greater damagebyinsects, but not e Cool/Max® Back dele Ergonomically That is because modern warming of Earth's climate is much | ir Mouon Desgied bead te ieee © StabilizationBelt ic e 400 Cubic Inch Total Space episode studied by Peter Wilf and | Se ¢ Ergonomically Designed Shoulder Pads fore rapid than the prehistoric Storage 3 Chambers Zipper Accessory eae Reservoir © 70 oz. Polyurethane happening 50 million years ago,” | | Reservoir #100 oz.Polyurethane Panel & Harness said ecologist Lissy Coley, a Uniwersity of Utah biology professor. © 100 07. Polyurethane 900 Cubic Inch Total Belt Pet ee @Cool/Max” Back Panel & Harness Extra Dry because of the same mechanisms ecnesdena Mest Stabilization Bungee Tie-down or Cold for Hours But does it mean modern-day global warming will send hordes ‘ 5 @ CoolMax" Back Panel e Full Length Pocket €onrad Labandeira of the Smith- a gonian’s National Museum of Nat- ral History in Washington on Regular "Their study of bug-bitten leaf fossils was publishedin the jourpal Science. Land plants and insects make up mostof Earth's bio- ssn sae sss diversity, and almost half the Qusects eat plants, theysaid Mon.-Fri. 930to9:00. Sat, 930 to7:00 Sun. 11:00 to 5-00 So “understanding the interactions between these two groupsis fundamental for understanding life on Earth,’ Coley wrote in an accompanying commentary. OD i’ Regula ee kegula Kiirkham’s1g3z ae mi Pricesor While FHICeWe ua ay Supplies Last outdoor products gi The Smithsonian researchers studied leaf fossils from south- western Wyoming's Green River. Great Divide and Washakie bamyes. The plants lived during the zelatively cool Paleocene Epoch 65 million to 58 million years ago and the warmer Eocene Epoch 58 _ million to 38 million years ago During several million years. the area's mean annual temperature warmed from 58 degrees Fahrenheit to a peak of 70 degrees 53 million years ago. By comparison, the mean annual temperature — an average of all seasons and hours — was 52 degrees in Salt Lake City from 1948 through 1990. Previous research showed that as the prehistoric climate warmed, all dominant plant spe- | SPRING & SUMMER || ies were replaced by new spe s, and plant diversity in creased. In the newstudy, the researchers found 41 typesof insect dam age on leaves of 39 floweringplant species from the Paleocene Epoch and 49 from the Eocene Theydiscovered insect bite marks on plants became moreabundant and were made by morespecies of insects as the climate warmed Coley said evidence that cli ate warming at asingle latitude CANDIES in increaseplant andinsect di rsity supports the theory that z arm climateis responsible for rich tropical biodiversity .- Another theory is that the trop: ttes were not disturbed by Ice Age glaciers and thus are older and have had moretime to develop greater biodiversity. A third the yty is the tropics have greater jand area, thus more niches and more diversity. EET. Taboo” tatami thong on wooden platform sole.. Orig. 45.00. with embroidered dragonfly Orig. 25.00 In EASY SPIRIT .5~ Sunfair” mesh upper with Prehistoric global warming was slow enough to allow what Cc ley Tamara” elastic criss-cross strap sandal. Orig. 30,00 called “a co-evolutionary arms race” during which mild winters = iis braid rope trim Orig. 39 00 illowed more insects and plants to survive and diversify You had insects eating plants ) the plants evolved defenses like chemicals or spines or tough ness,” Coley said “Then the in sects evolved adaptations, such as enzymes that could detoxify the chemicals or bigger mandibles to chew tough leaves. Then plants countered again with changes in their defenses. It was an escalat ing battle between plants and in sects Such slow evolutionary change WESTBOUND Roll" comfort sandal. Orig. 29.00 took millions of years, but global hive time to adapt and diversify Opley said. She expects global warming to reduce populations of birds ty of insect and plant species may “trop as some fail to survive a warmer world, she added Global warming also is expect ed to change rainfall patterns wrecking some farming areas or changing what crops can grow there. Coley said warmer nights Cutty” canvas oxford. Orig 35.00. Monsoor criss ross strappy sandal with gold buckle. Orig. 39.00 “AEROSOLES Stretchfull Situation” Lycra WOMEN’S DESIGNER ¢ Cole Haan® « Via Spiga’ : SPRING & SUMMER e Amalfi’ Sale)oe NLRB maha warming today is much more rap: Td, so insects and plants won't wasps, spiders, ants andparasites that prey oninsects, so insect pop ulations could grow and do more damageto plants. But the diversi LIZ SPORT WUee SESSerTi aN eel)oe WWeyiednitelal SELECTED STYLES. CHOOSE FROM: Will reduce crop yields by increas: ing nighttime respiration, so plants will burn more calories Current climate change will disrupt the fine-tuned relation ships between plants and insects that have evolved over the eons. Coley said Selection vanes by store Limited to stock on hand. 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